I agree with a lot of the sentiments about exclusive games for consoles allowing for optimization, but this just isn't one of those cases.
This is an 8 bit game. 8 bit! Every console -- the DS, the PSP, the Wii, the 360, the PS2, the PS3, the PC -- could run this game with the exact same specs and the same controller. This isn't a game that's optimized for a single platform, the way MGS4 was, the way Cooking Mama is, the way Boom Blox is; it isn't even optimized for a subset of platforms, the way Devil May Cry is (that works well on both the 360 and PS3, but would be very ineffective on the Wii, for example).
And we've already had a thread where we revealed that Mega Man 9 would be coming to the Wii; this isn't a general "hurray, it's coming to the Wii!" thread, it's a very specific "hurray, it's not coming to the PS3/360!" thread. We all know this game would not be changed in the slightest by being on the PS3/360, right? Then let's stop celebrating here.