Worldwide I would say unquestionably PS3. Even in the US where Sony's weakest, PS3 has a shot thanks to GOW3 and Gran Turismo being very popular (and GOW3 just looks incredible to everyone I know, even 360 owners). I guess it depends on any 360 price cuts and whether or not Halo Reach attracts new buyers or just sells millions to existing 360 owners.
I do think that Natal will sell more 360s than Arc will PS3s, though. And surprises at E3 could prove me wrong.







