I wonder what the rationale for having Nadal over Fed here might be. I figure Ned fans would try to pull the competition card but looking at his USO draws they'd have a very shaky foundation.
Opponents I consider good are bolded. Opponents I consider weak are italicized
Fed USO 2004 QF-F (so basically later-round) opponents: Agassi, Henman, Hewitt (sorry, he just didn't play a good match)
Fed USO 2005 QF-F opponents: Nalbandian, Hewitt, Agassi
Fed USO 2006 QF-F opponents: Blake, Davydenko, Roddick (Blake could be bolded here too, based on how he played for some of those sets)
Fed USO 2007 QF-F opponents: Roddick, Davydenko, Djokovic
Fed USO 2008 QF-F opponents: Muller, Djokovic, Murray (should probably italicize Murray too; it was his first Slam final and he wasn't prepared for the occasion)
Ned USO 2010 QF-F: Verdasco, Youzhny, Djokovic
Ned USO 2013 QF-F: Robredo, Gasquet, Djokovic
Ned USO 2017 QF-F: Rublev, Del Potro, Anderson (megalol)
Ned USO 2019 QF-F: Schwartzman, Berrettini, Medvedev (some wouldn't consider Med strong; I'm being more generous here).
Unlike other situations, Ned fans have absolutely no high ground when it comes to USO competition.