I'd say a Pump version would be more successful in a platform like Wii.
Why? Because casuals will go "zomg look a dancing game!". And if the distributor goes with a "lol look you can do exercise with this!" advertisement, the effects will be bigger.
Still, considering online capabilities and the posibilities to expand game with downloads, achievements / trophies and all that crap, X360 and PS3 would be better choices.
__________________  |