Your argument, if it can be called that, is pretty ludicrous, Dodece. On top of the laughable claim that MS uses "the most standard hardware" (which would be a decidedly bad thing anyway if it were true, since that means that their system is the easiest to ignore in favor of more unique hardware), you also conveniently ignore the PSN Marketplace and Virtual Console for PS3 and Wii, respectively.
While I can understand to some extent ignoring the former (the number of PS1 games up there is laughable at best right now, and a not-so-forward-thinking viewpoint would assume this will remain constant), the Virtual Console is quite another matter. Virtual Console more or less assures, assuming its continued survival into the next generation, that Nintendo will maintain the highest level of reasonable backwards compatibility possible. Making up the usual goalpost-rearranging arguments that it somehow "doesn't count" that way doesn't work when you actually look at the matter in reality: those games are available for purchase and play in their original unmodified form on a current (and likely future) system.