Does Guitar Hero's Sales count, being that it comes packed in with a guitar controller?
Does Sing Star's sales count, being that it comes packed in with a microphone?
What about DDR, Donky Kong Jungle Beat, Time Crysis 4 or Samba-de-amigo?
For many people they bought the Wii because of Wii Sports, and they went with the Wii play bundle for Wii Play; I doubt you can find anyone who choose Windows because it included Minesweeper or Solitare. Certainly, not everyone pays a lot of money for these games but they do impact the attach rate for the console; many people I know would have bought Wario Ware, Mario Party or Rayman Raving Rabbids in place of Wii Sports or Wii Play if it was not available.
These games may not have the longest or deepest single player games, but neither does Heavenly Sword which doesn't have the replayability due to not having multiplayer options.
I would agree that games that are (ever) bundled should have a * next to their sales ranking on their list of "best selling games" but that doesn't change that these games are important to the platform and that people were buying the system (in part) for these games.