While I disagree with the compare it to GTA III I also disagree with all the crap the OP said
Besides the mission thing that is
But don't get me wrong.
I also disagree with GTA comparing to GTA SA or any other game for that mather.
I feel GTA IV should be compared to GTA IV
It's a NEW game that just happens to wear the GTA name.
That's how I look at it.