I actually think it was a good idea. That way those who can't afford a Wiiu won't feel like they're missing out on anything, or those who don't want to buy both the 3ds and Wiiu won't be upset. It would seem a little greedy to vary the roster in my opinion. I can see the profit benefit, though, but that'd only be if the 3ds offered exclusives as well. Otherwise people would be more tempted to just wait for the Wiiu version.