^^^
Ok. I see what you're saying and you have a good point. There's nothing concrete for either platform. I can't find a PS3 announcement anywhere.
I still say that there's more supporting PS3 exclusivity than anything else though. Mainly because of that Eurogamer interview. There's no indication that team bondi is working on 2 titles and that interview seemed to speak purely about L.A.Noire.
The only thing supporting a multiplat title is a confusion between Team Bondi's game and R* North's secret title.
4 ≈ One