Failed Wii games are not a reflection of the Wii, they are a reflection of the games and the developers who made them (some exceptions - good games, no marketing support: Dead Space Extraction).

Sony will most likely accept anything as it will desperately want to build the library quickly. Hell, most of the titles will likely be aimed at kids, like Eye-Toy was. Some will be good, some will be bad, but in the end, to kit up a full batch of controllers for the whole family will be expensive and if they have a Wii, most will likely just pass on Move.