Fuck all your opinions. This goes beyond fanboy-ism...well, actually, no it doesn't, but this is more-justified fanboy-ism than what happens with, say, which console is better.
Exclusive games have always been a part of gaming culture, and if they start to mix and match, people WILL be pissed. What if they decided to put mario on the PS3? Or made a Halo game for the Wii? Nintendo's wide variety of over-used characters are still very much the face of Nintendo. Microsoft has Halo, Gears of War, and all the other grunting man-children with too much armor. Playstation is all about God of War, FINAL FANTASY (the 3-d ones), and even Rachet & Clank.
The moral is don't fuck with a GAME'S fanbase. Console 'tards will usually break their code to play other console games, if they're good enough. People who have played the Final Fantasy series from the original Playstation are NOT going to be thrilled that they are being offered a 360. Console fanbase only lasts a year or so, game fanbase stretches all the way back, across generations, even. You just don't fuck with that.
To put it in perspective, PC gamers, what if you won a contest for the Mac version of Starcraft II? Are you feeling pissed yet?