Your story is implausible because it involves somebody playing Twisted Metal.
It depends, of course, on the gamer. If that gamer owns a gaming PC, the Xbox 360's console exclusive library is no longer exclusive at all. The same applies if he is considering picking up a gaming PC. If not, then titles like Gears of War and (formerly) Mass Effect would be selling points.
Either way, however, those games are not exclusives.