On the flipside, Rockstar is using the Xbox 360 to demo the game to the press ... so they might say it's not the prettiest girl at the ball, but they sure love dancing with her. There's no doubt that as games get more graphically intense and the sheer scope of them continues to increase in size, storage is going become a more pressing issue. However, don't forget that right now the larger storage leads to longer load times, with the PS3 taking longer than the 360, due to the Blu-ray drive.
We didn't expect it to start happening quite so soon, but we're sure it's minimal as far as this title is concerned. We'll be watching the widening gap with interest.