So, in gamespot's opinion, WarioWare is better than the following:
FFXII
Okami
Legend of Zelda: Twilight Princess (on both systems)
Lost Planet
Counter Strike
Half-Life Episode 1
Pretty much the entire MGS series
Company of Heroes
Battlefield 2142
Call of Duty 2
Elder Scrolls III: Morrowind
Fable: The Lost Chapters
Medal of Honor Allied Assault
Heroes of Might and Magic IV

This game must be pretty good I'll have to try it. But seriously, it might be pretty good, I just think it's so funny that it got higher rated than all those games.
I'll have to check it out for myself.