What would be a bigger megaton? Mass Effect 2 on PS3? Or Versus on 360?

[RPG]

Neither would be megatons, Versus not so due to FFXIII already being on the 360 and ME2 due to EA owning Bioware. The real shocker would be if the games did NOT go multi-plat. Both companies need to make those games multi-plat though, both are not doing well at all financially.