Nintendo, and I would agree that the X360 has a higher-than-normal number of 15-25 y/o white males, but it's not in the way to characterize it as a hardcore gaming machine.
As for VP's sales:
To be fair, it's a pretty strange genre. It's a fantastic game, and one of my favorites for the X360. The issue is that it combines a great kid-friendly design, with a very difficult simulation-style gameplay. So the kids that want it might not understand it, while the game might look to childish for the sim-fan to buy.
Nevertheless, it sold 15k or so first week, and managed 250k overall. If Microsoft makes a VP2 (which they will), it'll sell alot better.
I'd compare Viva Pinata to Nintendo DS's Ouedan 1 and 2 (aka, Elite Beat Agents). It recieved very high reviews, but for some strange reason didn't sell good (about 75k or so in Japan for Ouedan 1). But when Ouedan 2 rolled around earlier this year, it wound up selling 260k thus far. So I think a VP2 would be very similar in sales.
Back from the dead, I'm afraid.
