I don't think it would flop. Seems to me that radio is very perceptive to playing both Gaga and Britney still. They just need the right song to play. If they could get it perfectly right, I think it could be a smash.
Big names alone don't ensure chart success - look at CRTFY. The song needs to be damn good. All a big name ensures is that radio/buyers will try it out in the first place