Terms such as 'AAA' and 'Best' are completely opinion based and entirely dependent on the views of each individual. And the LAST way someone should compare games is by the reviews it got. That's like comparing movies based on their reviews. I don't know about you, but I'm not going to call a new movie like Avatar an 'AAA' title next to Forrest Gump or Indiana Jones just because a bunch of overpaid movie reviewers give it some huge inflated scores. Likewise, I'm not going to skip a movie because some reviewers downgraded a movies score overall.
That aside, in MY opinion, the Wii is already about equal if not already beyond the GameCube in both quality and quantity of good titles. I mean, a good indicator of how good the Wii is doing is many of the best titles on the GameCube have already re-released on the system. And then you have many of the same amount of great titles on the system. But of course, many people are going to have different views.