I frankly never understood the real reason why Fez was released exclusively for xbox. From the outsider perspective it seems like a very bad decision when it comes to a game as hyped as this one was.
Do you have any numbers to back you up? I couldn't find any. All I got pointed the Wii as worldwide sales leader and 360 and PS3 more or less tied in second place. The 360 seems to have a small lead over the PS3 in the US (with Wii coming in third), but that's all.
What should be counted is actual money spent inside the platform's online ecosystem - kinda curious myself how PSN is doing compared to Xbox Live. I'll have to look this up when I get a chance.
Also, this has been an unusually long console hardware cycle resulting in there being a much bigger gap between PC and console graphics.
Is not about how many people connect their PCs to their televisions, but about how they enjoy playing their games. IMHO that does not justify the Microsoft exclusivity strategy.