Wii Play 2 with a motion plus attachment with 5 motion+ games gives people a reason to M+ another wii-mote. Yes, M+ will sell on its own but doing another Wii Play just for M+ would sell boatloads.
However, with 10 games included, I'm guessing WSR is going to be WiiSports 2 and WiiPlay 2 combined.
Oh and I'd argue fishing and the bubble-pose matching game needs more than just the pointer.
Nov 2016 - NES outsells PS1 (JP)
Don't Play Stationary 4 ever. Switch!