Flown F16s or F/A-18s, no. Flown (back seat) FJ, and studied combat performance, yes.
Max rate and min radius are both primarily down - in any continuous turn - to available excess thrust in a fast jet, particularly at lower altitudes. Higher up you can turn potential energy into continuous turn rate - but clearly will lose height doing so.
Instantaneous are down to the stall margins - but almost always there's not enough thrust to sustain what the wing can, indefinitely.
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Last edited by Genghis the Engineer; 12th Nov 2018 at 15:22.