Parker's explanation in the Annual made little sense. Banner has accepted Hulk before, but that's no true reason for his regression. First Waid said it was the Chronarchists who were tampering with time that was causing Hulk to fluctuate, then in the Annual Parker claimed that it was because Banner accepted Hulk. Not very strong explanations. Not at all.
Banner accepted Hulk in Mantlo's run, thus gaining an intelligent Hulk, so why not in Waid's Indestructible? Hulk and Banner worked together in Pak's tenure, though reluctantly and the same could be said of PAD's run in numerous cases. When it all comes down to it, dude, this is simply Marvel & Waid regressing a character to fit their narrow-minded, self serving views on how a character should act and be. It's like Bendis whom you claimed that Hulk would always revert to Savage Hulk IQ levels, which is a load of BS considering the numerous incarnations.
PAD's Hulk during Tempest Fugit/House of M & Greg Pak's Planet Hulk/World War Hulk is the Green Goliath's naturally progressed state of being. That's how he should of been when Pak left, and it's how he should be right now. But thanks to the likes of Jason Aaron, Mark Waid, and Marvel itself... we're stuck with this version which leaves a lot to be desired.
Sorry for the rant, but I just wanted to get the facts straight and tell it like it is. :)