Nintendo claims that the revolution will backwards compatable to play ALL forms of nintendo. Or at least all previous CONSOLE systems (Certainly not the DS. Not sure about GB, but unlikely, I would say). That means N64, SNES, and NES. Appearantly, this will be done in the form of rom downloading. I'm not sure how myself.
If Nintendo is unable to somehow verify ownership of these roms in order for them to function (who knows, maybe they don't even really try), and you are allowed to run all SNES, NES, and N64 roms on the Revolution, regardless of whether you actually own them (say you just downloaded every rom off a certain P2P network), then will this increase your likelihood of purchasing a Revolution as opposed to the 360 or the ps3?