The documents you posted say Exxon was consulted and offered their opinions through the GCC. While they were disingenuous to the House of Lords & other groups claiming they had played no role, that's not the same thing as Bush picking up the phone to them and saying "Yes, master?" as this article would have it.
I'd like to see some evidence of quid pro quo before we accept it as fact. I'd also like to know who else was on that GCC and in what percentages. It's an interesting start, and certainly doesn't look great, but there's a lot more homework to be done yet.
Bookmarks