Skylion,
More urban myth and legend I'm afraid!
The Americans played absolutely no part in the cancellation of the TSR2, none whatsoever.
Even the Air Staff were convinced it had to go.
As to the TSR2 remaining a world leader even to this day, that is palpable nonsense too. It wasn't even a world leader in the 60's and it would have been obsolete by the late seventies if it had gone into service when planned as it was the wrong aircraft, for the wrong mission with the wrong performance.
What followed TSR2, in terms of F-4M, Harrier, Buccaneer, Jaguar and Tornado were the right aircraft for the time and were affordable in quantities that the TSR2 could never have aspired to.