Do you think that if the Wii2* comes out 1-2 years ahead of the PS4* and Xbox720*, and truly has "vastly better HW" than the PS3 and 360 as is currently rumoured, therefore modern games will look/play better on the Wii2-

Will that be enough to convert the core audience? Speaking as a guy who owns 3 modern consoles- I think I'll only get 1 console next gen and, if I had to guess today- based on company and personal history, it will probably be the next xbox. It might be a painful year or two to see how awesome newer games run on the Wii2*, but I have to imagine MS and Sony will not let Wii2 outdo their planned systems.

I have to also imagine that by the time the Wii2* is on shelves that we'll know what the specs to the PS4* and 720* will be. The Sony one, of course, will be advertised to turn lead and other lesser metals into gold and also to give absolvince for sin. And make baby dolls levitate and cry real tears.