About the quality of games.................Gamepro Feb. '03 magazine had its 11 reviewers list the "Top 10" games of the year, regardless of platform (i.e. PC, Xbox, PS2, GC).
Number of different games in the Top 10 lists of the 11 Pro Reviewers:
PC: 5
Gamecube: 12
Xbox: 18
PS2: 28
The games that were on more than one of the 2002 Top 10 lists of the 11 reviewers were:
Xbox [6 total]: Splinter Cell(4), Soccer Slam(2), Steel Battalion(3), Hitman 2(2), Jet Set Radio(3), Bloodraye(2)
Gamecube [4 total]: Eternal Darkness(5), Metroid Prime(5), Animal Crossing(5), Super Mario Sunshine(3)
PS2 [11 total]: Way of Samurai(4), Shinobi(4), Ratchet & Clank(3), Medal of Honor: Frontline(2), Need for Speed: Hot Pursuit 2(3), Tony Hawk 4(2), GTA: Vice City(5), Aggressive Inline(2), Suikoden3(2), Kingdom Hearts(3), Onimusha 2(2)
PC [0 total]: none
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From this list, you can see that while PS2 dominates in the sheer number of releases and number of quality games due to their dominant market share, Gamecube and Xbox do proportionately very decently as they account for the other 1/2 of the market--30 combined Top 10 games vs Ps2's 28.
It is truly important to have market share as the number of quality games correlate rather proportionately to the market share. Greater unit market share=more quality games.
If you count "instant classic" games as being a game on more than 4 of the 11 reviewers TOP 10 lists, Gamecube tied PS2 with 3 each. Xbox had one game on 4 TOP 10 lists.