That "orange tint" part was a joke, going back to that huge thread where some found the PS3 version better because of the orange tint, in spite of all the other shortcomings. Well, at least I found it funny anyways
I'll reword it for you then...Sony are exempt from their own rules. I've already been on the receiving end of that double standard once before, it exists. I could make frame rate *today* if I were allowed to render at 1024x512 since we're mostly fragment bound. If I tried that while the 360 version was left at 1280x720, do you think Sony would accept it? I'll give you a hint, the answer is no
Whether they did or didn't is largely moot because Rockstar can do anything it damn well wants. Which manufacturer in their right mind would refuse GTA4?
'Help' does not mean they send a crack team of 20 commandos to code the game for them. It's usually one, maybe two guys that go over and make suggestions, much of which can be deduced through gcmReplay anyways. In the end, Rockstar still has to code it all themselves.
Too expensive. It would take longer to complete the game that way due mostly to tools which still lag behind, everything from compilers, debuggers, etc. Given that some studios have a $1 million/month burn, it's really not recommended to go that route unless Sony is bankrolling you.