Because that's what people are using to meaasure tie ratios of the wii. And what about Mad World? And if IIRC The Conduit was build from the ground up for the wii. And why did 3rd party avoid the wii. But anyway, my point was there was alot of artificial growth this Gen. without any real justification.
Wii Fit is a stand-alone title so why shouldn't it be counted?
Mad World is an ultra violent M-rated action game a with very different art style. It's too different to be a huge success on any platform (=niche).
I can build a game from the ground up for Wii but it still doesn't make it a good game, does it? Are you seriously wondering why such a mediocre game (
http://www.metacritic.com/game/wii/the-conduit) wasn't a commercial success?
3rd parties avoiding Wii has been discussed dozens of times earlier in GAF. Main reason: Wii was a surprise success; everyone was expecting it to fail and PS3 to take the lead. Thus, software wasn't there when Wii launched, and it never came. Half-assed ports, quick cash-ins and bad to mediocre games were used as justifications to prove that 3rd parties cannot success on Wii (which is not true since Wii owners responded to good games ie. RE4 Wii, MonHun Tri, Epic Mickey etc.) There was a huge chunk of money on the table with the Wii for developers and publishers to take, but they refused to take it and kept betting for HD consoles. It's not that simple, but some of those bad decisions made this list as long as it is:
http://www.neogaf.com/forum/showthread.php?t=459131
Wii was there to offer a cheaper way to create video games for example for smaller companies compared to higher dev costs on HD consoles. Video game industry is heading for a crash, or into a situation where only safe sure-to-be-hit sequels (for example see: Call of Duty) are made anymore: