This goes back to Halo 3, the 360 to my understanding has not done PS2 numbers or even half that however the game had great sales and legs so the "solid amount of hardware each week" is silly. PS3 numbers are no here near good but most definitely not terrible. We cannot see into the future as well as there is no knowing if PS3 sales increase near the release of the console, if a price cut comes etc.
MGS4 is from an extremely hardcore franchise which is the reason it was so front loaded but GT is both for casual and hardcore gamers. I did not understand your MGS4 to GT5 comparison because it was stupid therefore still do not understand it.
Now GTA IV on PS3 compared to the PS2 games, well stickball if you're not cannot see where you went wrong there is no hope for you. Also for someone who loves his sales numbers you have no idea about market saturation and what happens when a sequal of a game releases later on in the consoles lifecycle.
GT5 will easily sell what Halo 3 did at worst, prologue has shown that people still have interest in the franchise. It was bundled of course but not for long in NA and EU, lately was in Japan but that finished a few weeks ago. Then there are also the PSN downloads sales which we have no idea about, I highly doubt prologue has the majority of it's sales come from bundles unlike Forza 2.
