The TSR.2 was the best aircraft, and the best option at the time, everybody knew it. It's matchless performance could not be challenged by any other aircraft. Even over the F-111, which, after all "fixes" were implemented, eventually turned out to be a very good airplane, still the TSR.2 had it beat. Seems that there were a couple of other incidences where planes like the TSR.2 lost out due to political influences. One of which was the Martin Baker MB.5, the other was Northrop's F-20 Tiger Shark.
Any aircraft in the early stages of development is going to have issues that need to be addressed. The TSR.2 had it's share, but initially proved what it was capable of... prior to having the fixes implemented, (landing gear and fuel pumps, as mentioned above). Having an aircraft the size of the TSR.2 being able to "supercruise" without afterburner was a phenomenal achievement for the time. Just my bit...
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