Did PS3 dev troubles cause GTA IV delay?

Yesterday's big news was that Rockstar's Grand Theft Auto IV was pushed back from its October release into sometime next year. But what if we told you the reason for such delay wasn't because of technical issues on the 360, but problems on the PS3 version of the game? Well, that's what analyst Michael Pachter is thinking saying that "the Rockstar team had difficulty in building an exceptionally complicated game for the PS3" and that the "delay of the PS3 version necessitated a delay of the Xbox 360 version" due to contractual obligations with Sony. So, if Mr. Pachter's theory has any weight, Rockstar may have had to delay GTA IV on the 360, because of issues with the PS3 version and them not being able to release the game before the PS3 version got out the door. Very intriguing indeed.