I think it all comes to this, Mario = Sales god
If NSMBwii has the same acceptance of New Super Mario DS had, then it can easily outsell COD plus any game released this generation for home consoles. Even if it doesn't, it will still sell over any game in this generation as well, at least in my opinion.
Never misjudge the power of a 2D Mario game on consoles :)
Current PC Build
CPU - i7 8700K 3.7 GHz (4.7 GHz turbo) 6 cores OC'd to 5.2 GHz with Watercooling (Hydro Series H110i) | MB - Gigabyte Z370 HD3P ATX | Gigabyte GTX 1080ti Gaming OC BLACK 11G (1657 MHz Boost Core / 11010 MHz Memory) | RAM - Corsair DIMM 32GB DDR4, 2400 MHz | PSU - Corsair CX650M (80+ Bronze) 650W | Audio - Asus Essence STX II 7.1 | Monitor - Samsung U28E590D 4K UHD, Freesync, 1 ms, 60 Hz, 28"
