His CPU is more than fine, get a clue peepz. Athlon x4 is more than enough for WoW.
The GTX 460 is far superior to 5770, stop being a fanboy. And no, 5770 and 460 costs about the same, depends on which models you pick.
Fanboy? I just looked at the prices on Newegg and it was $160 vs $120 for the lowest price ones assuming you want 1GB to run at 1080p. I would expect to run faster if it costs 33% more but it also eats a lot more energy.
You are very wrong. GTX 460 is the strongest card when it comes down to price/performance. It's been proven over and over. The 5770 is even slower than the GTX 260 (216) which is a much older card, of course 460 beats the crap out of 5770, it's about 25% faster.