How about Fatal Frame, Metroid HD, Xenoblade, Monolith's IP, rumors of another big exclusive being grabbed by Nintendo, Bayonetta 2. Don't sleep on Nintendo!
Fatal Frame sales on Wii were dreadful, Metroid Prime 3 never reached 1.75 million worldwide, Metroid Other M never reached 1.25 million worldwide, Xenoblade is not a million seller, Bayonetta never reached 2 million across two systems with stronger 3rd party sales than Wii (PS3 and Xbox 360) and I predict Bayonetta 2 will sell worse than the first one because it's a Wii U exclusive and is releasing very early in the lifetime of the console. On the other hand NSMB Wii has sold over 26 million (more than all the previously mentioned games 5 times over).
Can't speak about the rumored exclusive.
XBL Gamertag: ckmlb, PSN ID: ckmlb