ok, so what are we comparing here? First month to LTD? Did you have a question for this thread? Perhaps whether or not Forza 3 will eventually sell more than GT5: prologue?
I'm assuming that is what you meant to ask in the op and just didn't get around to it, so that is what I will address. Personally, I think they will be close. Depends on whether or not microsoft bundles forza 3. I think they eventually will, probably next holiday season, so I will say yes, eventually it will pass up GT5: prologue.