The thing though is your missint that the Wii sold awesome b4 WiiFit, the Wii is still very popular and what not with basically everyone i talk to. The Wii will still get lots of third party support bc you cant just ignore half of the market. Core gamers will have a Wii along with one or both HD systems for a few gems, which then makes more come out for the Wii in the long run. Also if you notice it is mostly bloody FPS that are normally just eclusive to the HD platform now, other than the First party titles.
Then you are forgetting large games coming out for the Wii, such as MH and Tales especially for Japan and did you forget DQX is coming out for the Wii?
Did you forget that western support is basically increasing and looking at GH sales obviously games like those which make companies the most revenue and profit margins are high on such games will definitely come to the Wii, Wii version of GHIII and WT is highest above the 360 version despite the 360 having a game advantage.
Essentially your points could be valid but in terms of mass market appeal the Wii is winning in the NA market for sure, i cant speak for others since i do not know their culture as well. Well actually in US its Wii and 360 then PS3 just for like the sony exclusives but M$ makes sure those seem inferior to those on the 360.
