I agree with DBZ Budokai 2 and 1 being underrated that is true I own both and enjoy both now I can agree that I didn't like the puzzle game for story mode but the fighting was good
Another game I think is overrated is NFS Most Wanted I have this game and its a waste of money cause let me tell you this back when NFS3 came a.k.a Hot Pursuit now that game had a sense of speed so did 4 and 5 but 6 a.k.a Hot Pursuit 2 kinda stopped that a bit so did U1 and U2 that's when Ea made me mad because the sense of speed in U1 and U2 were basically gone then their open worlds were not that great
GTA IS NOT UNDERRATED EITHER MINE YOU
More Underrated games
Killzone
like I said before Aggressive Inline(its actually better than Tony Hawk games maybe except Underground 1 and THAW)
Sonice Heros(now why I say this is because I own the game and people have trashed this game alot I say its good but yes it could have been better)
Shinobi the one for PS2 that came out in 2002 alot of people say they didn't like that game either I got it and its great and the reason they say that is because its too hard