Federer is a better ball striker with just about every shot there is, I can't say the same about Nalbandian.
This is a ridiculous thread, if Federer wasn't more talented (better ball striker as well) He would not be the best player ever.
Look at the results and achievements and you'll see who is a better ball striker when it matters.
2X VCore Tour F with 6g at 12 o'clock ---Yonex PC Light. Stan is the MAN.