Megaman 9 (Wii, XBLA, PSN) » Megaman 9
Megaman’s designer Inafune stated that Megaman 9 could not in fact have fitted on a Famicom cartridge despite it looking almost exactly like the original games.
It does look a little clearer than the old versions (at least compared to the Wii Virtual Console) and you can choose whether or not you want to allow sprite flicker. Apart from these few distinguishing features though I am hard pushed to see where the extra memory is going.

