It wasn't asked for, but coolestguyever made me wonder how things stood last generation. PS2 has way too many to list them all, so I'll just post some statistics for each system. I only have data for GC and PS2 at the moment, since PS2 took so long I don't feel like doing XBOX right now, but I'll edit this post in the future if anyone is interested.
Million sellers were determined by VGChartz's game database while ratings are an average of metacritic and gamerankings scores.
GC:
Total - 38
90+ - 9 23.68%
80-89 - 15 39.47%
70-79 - 9 23.68%
-69 - 5 13.16%
Max 96.611
Avg 81.951
Median 83.224
Min 54.743
PS2:
Total - 197
90+ - 41 20.81%
80-89 - 87 39.47%
70-79 - 44 22.34%
-69 - 25 12.69%
Max 96.059
Avg 81.280
Median 82.967
Min 37.7885
And current gen stats according to coolestguyever's tables.
Wii:
Total - 18
90+ - 4 22.22%
80-89 - 3 16.67%
70-79 - 4 22.22%
-69 - 7 38.89%
Max 97
Avg 77.222
Median 77.5
Min 58
PS3:
Total - 8
90+ - 1 12.5%
80-89 - 5 62.5%
70-79 - 2 25%
-69 - 0 0%
Max 94
Avg 82.375
Median 81.5
Min 73
