Here are Sampras' and Federer's US Open matches, so you can compare them yourselves:
Pete Sampras
1988 US Open - Pete Sampras
R128: Jaime Yzaga def. Pete Sampras (6-7, 6-7, 6-4, 7-5, 6-2)
1989 US Open - Pete Sampras
R128: Pete Sampras def. Agustin Moreno (6-3, 5-7, 6-4, 6-1)
R64: Pete Sampras def. Mats Wilander (5-7, 6-3, 1-6, 6-1, 6-4)
R32: Pete Sampras def. Jaime Yzaga (4-6, 6-4, 6-3, 6-2)
R16: Jay Berger def. Pete Sampras (7-5, 6-2, 6-1)
1990 US Open - Pete Sampras
R128: Pete Sampras def. Dan Goldie (6-1, 7-5, 6-1)
R64: Pete Sampras def. Peter Lundgren (6-4, 6-3, 6-3)
R32: Pete Sampras def. Jakob Hlasek (6-3, 6-4, 6-1)
R16: Pete Sampras def. Thomas Muster (6-7, 7-6, 6-4, 6-3)
QF: Pete Sampras def. Ivan Lendl (6-4, 7-6, 3-6, 4-6, 6-2)
SF: Pete Sampras def. John McEnroe (6-2, 6-4, 3-6, 6-3)
FR: Pete Sampras def. Andre Agassi (6-4, 6-3, 6-2)
1991 US Open - Pete Sampras
R128: Pete Sampras def. Christo Van Rensburg (6-0, 6-3, 6-2)
R64: Pete Sampras def. Wayne Ferreira (6-1, 6-2, 2-2 ret.)
R32: Pete Sampras def. Stephane Simian (7-6, 6-4, 6-7, 6-3)
R16: Pete Sampras def. David Wheaton (3-6, 6-2, 6-2, 6-4)
QF: Jim Courier def. Pete Sampras (6-2, 7-6, 7-6)
1992 US Open - Pete Sampras
R128: Pete Sampras def. David Dilucia (6-3, 7-5, 6-2)
R64: Pete Sampras def. Martin Damm (7-5, 6-1, 6-2)
R32: Pete Sampras def. Todd Martin (7-6, 2-6, 4-6, 7-5, 6-4)
R16: Pete Sampras def. Guy Forget (6-3, 1-6, 1-6, 6-4, 6-3)
QF: Pete Sampras def. Alexander Volkov (6-4, 6-1, 6-0)
SF: Pete Sampras def. Jim Courier (6-1, 3-6, 6-2, 6-2)
FR: Stefan Edberg def. Pete Sampras (3-6, 6-4, 7-6, 6-2)
1993 US Open - Pete Sampras
R128: Pete Sampras def. Fabrice Santoro (6-3, 6-1, 6-2)
R64: Pete Sampras def. Daniel Vacek (6-4, 5-7, 6-2, 7-6)
R32: Pete Sampras def. Arnaud Boetsch (6-4, 6-3, 6-1)
R16: Pete Sampras def. Thomas Enqvist (6-4, 6-4, 7-6)
QF: Pete Sampras def. Michael Chang (6-7, 7-6, 6-1, 6-1)
SF: Pete Sampras def. Alexander Volkov (6-4, 6-3, 6-2)
FR: Pete Sampras def. Cedric Pioline (6-4, 6-4, 6-3)
1994 US Open - Pete Sampras
R128: Pete Sampras def. Kevin Ullyett (6-2, 6-2, 6-2)
R64: Pete Sampras def. Daniel Vacek (6-3, 6-4, 6-4)
R32: Pete Sampras def. Roger Smith (4-6, 6-2, 6-4, 6-3)
R16: Jaime Yzaga def. Pete Sampras (3-6, 6-3, 4-6, 7-6, 7-5)
1995 US Open - Pete Sampras
R128: Pete Sampras def. Fernando Meligeni (6-0, 6-3, 6-4)
R64: Pete Sampras def. Jaime Yzaga (6-1, 6-4, 6-3)
R32: Pete Sampras def. Mark Philippoussis (6-7, 7-5, 7-5, 6-3)
R16: Pete Sampras def. Todd Martin (7-6, 6-3, 6-4)
QF: Pete Sampras def. Byron Black (7-6, 6-4, 6-0)
SF: Pete Sampras def. Jim Courier (7-5, 4-6, 6-4, 7-5)
FR: Pete Sampras def. Andre Agassi (6-4, 6-3, 4-6, 7-5)
1996 US Open - Pete Sampras
R128: Pete Sampras def. Jimy Szymanski (6-2, 6-2, 6-1)
R64: Pete Sampras def. Jiri Novak (6-3, 1-6, 6-3, 4-6, 6-4)
R32: Pete Sampras def. Alexander Volkov (6-3, 6-4, 6-2)
R16: Pete Sampras def. Mark Philippoussis (6-3, 6-3, 6-4)
QF: Pete Sampras def. Alex Corretja (7-6, 5-7, 5-7, 6-4, 7-6)
SF: Pete Sampras def. Goran Ivanisevic (6-3, 6-4, 6-7, 6-3)
FR: Pete Sampras def. Michael Chang (6-1, 6-4, 7-6)
1997 US Open - Pete Sampras
R128: Pete Sampras def. Todd Larkham (6-3, 6-1, 6-3)
R64: Pete Sampras def. Patrick Baur (7-5, 6-4, 6-3)
R32: Pete Sampras def. Alex Radulescu (6-3, 6-4, 6-4)
R16: Petr Korda def. Pete Sampras (6-7, 7-5, 7-6, 3-6, 7-6)
1998 US Open - Pete Sampras
R128: Pete Sampras def. Marc-Kevin Goellner (6-3, 6-2, 6-2)
R64: Pete Sampras def. Paul Goldstein (7-6, 2-6, 6-3, 6-3)
R32: Pete Sampras def. Mikael Tillstrom (6-2, 6-3, 6-1)
R16: Pete Sampras def. Marat Safin (6-4, 6-3, 6-2)
QF: Pete Sampras def. Karol Kucera (6-3, 7-5, 6-4)
SF: Patrick Rafter def. Pete Sampras (6-7, 6-4, 2-6, 6-4, 6-3)
2000 US Open - Pete Sampras
R128: Pete Sampras def. Martin Damm (7-6, 7-5, 6-4)
R64: Pete Sampras def. Justin Gimelstob (6-3, 6-1, 6-3)
R32: Pete Sampras def. Agustin Calleri (7-6, 7-6, 6-3)
R16: Pete Sampras def. Hyung-Taik Lee (7-6, 6-2, 6-4)
QF: Pete Sampras def. Richard Krajicek (4-6, 7-6, 6-4, 6-2)
SF: Pete Sampras def. Lleyton Hewitt (7-6, 6-4, 7-6)
FR: Marat Safin def. Pete Sampras (6-4, 6-3, 6-3)
2001 US Open - Pete Sampras
R128: Pete Sampras def. Julien Boutter (6-4, 7-6, 7-6)
R64: Pete Sampras def. Andre Sa (7-6, 6-4, 6-3)
R32: Pete Sampras def. Mikhail Youzhny (6-3, 6-2, 6-2)
R16: Pete Sampras def. Patrick Rafter (6-3, 6-2, 6-7, 6-4)
QF: Pete Sampras def. Andre Agassi (6-7, 7-6, 7-6, 7-6)
SF: Pete Sampras def. Marat Safin (6-3, 7-6, 6-3)
FR: Lleyton Hewitt def. Pete Sampras (7-6, 6-1, 6-1)
2002 US Open - Pete Sampras
R128: Pete Sampras def. Albert Portas (6-1, 6-4, 6-4)
R64: Pete Sampras def. Kristian Pless (6-3, 7-5, 6-4)
R32: Pete Sampras def. Greg Rusedski (7-6, 4-6, 7-6, 3-6, 6-4)
R16: Pete Sampras def. Tommy Haas (7-5, 6-4, 6-7, 7-5)
QF: Pete Sampras def. Andy Roddick (6-3, 6-2, 6-4)
SF: Pete Sampras def. Sjeng Schalken (7-6, 7-6, 6-2)
FR: Pete Sampras def. Andre Agassi (6-3, 6-4, 5-7, 6-4)
Roger Federer
2000 US Open - Roger Federer
R128: Roger Federer def. Peter Wessels (4-6, 4-6, 6-3, 7-5, 3-4 ret.)
R64: Roger Federer def. Daniel Nestor (6-1, 7-6, 6-1)
R32: Juan Carlos Ferrero def. Roger Federer (7-5, 7-6, 1-6, 7-6)
2001 US Open - Roger Federer
R128: Roger Federer def. Lars Burgsmuller (6-4, 6-4, 6-4)
R64: Roger Federer def. Robby Ginepri (6-2, 7-5, 6-1)
R32: Roger Federer def. Sjeng Schalken (6-4, 7-5, 7-6)
R16: Andre Agassi def. Roger Federer (6-1, 6-2, 6-4)
2002 US Open - Roger Federer
R128: Roger Federer def. Jiri Vanek (6-1, 6-3, 4-6, 7-5)
R64: Roger Federer def. Michael Chang (6-3, 6-1, 6-3)
R32: Roger Federer def. Xavier Malisse (4-6, 6-3, 6-4, 6-4)
R16: Max Mirnyi def. Roger Federer (6-3, 7-6, 6-4)
2003 US Open - Roger Federer
R128: Roger Federer def. Jose Acasuso (5-7, 6-3, 6-3, 2-0 ret.)
R64: Roger Federer def. Jean-Rene Lisnard (6-1, 6-2, 6-0)
R32: Roger Federer def. James Blake (6-3, 7-6, 6-3)
R16: David Nalbandian def. Roger Federer (3-6, 7-6, 6-4, 6-3)
2004 US Open - Roger Federer
R128: Roger Federer def. Albert Costa (7-5, 6-2, 6-4)
R64: Roger Federer def. Marcos Baghdatis (6-2, 6-7, 6-3, 6-1)
R32: Roger Federer def. Fabrice Santoro (6-0, 6-4, 7-6)
R16: Roger Federer def. Andrei Pavel (Walkover)
QF: Roger Federer def. Andre Agassi (6-3, 2-6, 7-5, 3-6, 6-3)
SF: Roger Federer def. Tim Henman (6-3, 6-4, 6-4)
FR: Roger Federer def. Lleyton Hewitt (6-0, 7-6, 6-0)
2005 US Open - Roger Federer
R128: Roger Federer def. Ivo Minar (6-1, 6-1, 6-1)
R64: Roger Federer def. Fabrice Santoro (7-5, 7-5, 7-6)
R32: Roger Federer def. Olivier Rochus (6-3, 7-6, 6-2)
R16: Roger Federer def. Nicolas Kiefer (6-4, 6-7, 6-3, 6-4)
QF: Roger Federer def. David Nalbandian (6-2, 6-4, 6-1)
SF: Roger Federer def. Lleyton Hewitt (6-3, 7-6, 4-6, 6-3)
FR: Roger Federer def. Andre Agassi (6-3, 2-6, 7-6, 6-1)
2006 US Open - Roger Federer
R128: Roger Federer def. Jimmy Wang (6-4, 6-1, 6-0)
R64: Roger Federer def. Tim Henman (6-3, 6-4, 7-5)
R32: Roger Federer def. Vincent Spadea (6-3, 6-3, 6-0)
R16: Roger Federer def. Marc Gicquel (6-3, 7-6, 6-3)
QF: Roger Federer def. James Blake (7-6, 6-0, 6-7, 6-4)
SF: Roger Federer def. Nikolay Davydenko (6-1, 7-5, 6-4)
FR: Roger Federer def. Andy Roddick (6-2, 4-6, 7-5, 6-1)
2007 US Open - Roger Federer
R128: Roger Federer def. Scoville Jenkins (6-3, 6-2, 6-4)
R64: Roger Federer def. Paul Capdeville (6-1, 6-4, 6-4)
R32: Roger Federer def. John Isner (6-7, 6-2, 6-4, 6-2)
R16: Roger Federer def. Feliciano Lopez (3-6, 6-4, 6-1, 6-4)
QF: Roger Federer def. Andy Roddick (7-6, 7-6, 6-2)
SF: Roger Federer def. Nikolay Davydenko (7-5, 6-1, 7-5)
FR: Roger Federer def. Novak Djokovic (7-6, 7-6, 6-4)
2008 US Open - Roger Federer
R128: Roger Federer def. Maximo Gonzalez (6-3, 6-0, 6-3)
R64: Roger Federer def. Thiago Alves (6-3, 7-5, 6-4)
R32: Roger Federer def. Radek Stepanek (6-3, 6-3, 6-2)
R16: Roger Federer def. Igor Andreev (6-7, 7-6, 6-3, 3-6, 6-3)
QF: Roger Federer def. Gilles Muller (7-6, 6-4, 7-6)
SF: Roger Federer def. Novak Djokovic (6-3, 5-7, 7-5, 6-2)
FR: Roger Federer def. Andy Murray (6-2, 7-5, 6-2)
2009 US Open - Roger Federer
R128: Roger Federer def. Devin Britton (6-1, 6-3, 7-5)
R64: Roger Federer def. Simon Greul (6-3, 7-5, 7-5)
R32: Roger Federer def. Lleyton Hewitt (4-6, 6-3, 7-5, 6-4)
R16: Roger Federer def. Tommy Robredo (7-5, 6-2, 6-2)
QF: Roger Federer def. Robin Soderling (6-0, 6-3, 6-7, 7-6)
SF: Roger Federer def. Novak Djokovic (7-6, 7-5, 7-5)
FR: Juan Martin del Potro def. Roger Federer (3-6, 7-6, 4-6, 7-6, 6-2)
2010 US Open - Roger Federer
R128: Roger Federer def. Brian Dabul (6-1, 6-4, 6-2)
R64: Roger Federer def. Andreas Beck (6-3, 6-4, 6-3)
R32: Roger Federer def. Paul-Henri Mathieu (6-4, 6-3, 6-3)
R16: Roger Federer def. Jurgen Melzer (6-3, 7-6, 6-3)
QF: Roger Federer def. Robin Soderling (6-4, 6-4, 7-5)
SF: Novak Djokovic def. Roger Federer (5-7, 6-1, 5-7, 6-2, 7-5)
2011 US Open - Roger Federer
R128: Roger Federer def. Santiago Giraldo (6-4, 6-3, 6-2)
R64: Roger Federer def. Dudi Sela (6-3, 6-2, 6-2)
R32: Roger Federer def. Marin Cilic (6-3, 4-6, 6-4, 6-2)
R16: Roger Federer def. Juan Monaco (6-1, 6-2, 6-0)
QF: Roger Federer def. Jo-Wilfried Tsonga (6-4, 6-3, 6-3)
SF: Novak Djokovic def. Roger Federer (6-7, 4-6, 6-3, 6-2, 7-5)