80's kids are biased toward the SNES, and recently the N64 has been the system (for 90's kids) of childhood memories and college-dorm memories to hype up. Gamecube is coming up the pipeline soon, and in 10 years from now, we'll hear stories 2000's kids of how the Wii was their first console ever and the memories they had. People often say "your favorite Zelda game is your first Zelda game". This tends to apply to consoles too. Usually the first full console generation that came out when you were around 10-15 is your favorite.
In effect, I think it causes us to overestimate SNES and N64 while underestimating Gamecube and Wii. If you count the amount of great exclusive games (let's say, 8/10 or higher) on each, they will come out to about the same. It's just harder to replicate an earlier experience.
Let's reverse the order of the consoles to sort of make things more objective
1985 - Wii U
1991 - Wii
1996 - Gamecube2001 - Nintendo 64
2006 - Super Nintendo
2012 - NES
Looks a lot different like this. I would've probably been an N64 lover instead of a Gamecube lover.