I dont think DWUW is the safer choice.. it may seem like it.. but it wont ever be ha HUGE hit .. Theres no GaGa factor in it. Its good but it can be sung by any one while Venus just screams GaGa, and it is amazing, it's about sex and being fun, unlike Judas. It will SMASH hard !
Venus shouldn't even be a single. DWUW isn't the next Just Dance or Bad Romance but it would definitely have been more successful than Venus. Venus might do worse than Applause as far as then GP goes.