Assume I learn how to shoot down said multirole aircraft.
The F35 employs the same stealth technoilogy as the F22, which in simulations and combat tests defeated all the aircraft you mentioned. The only way to shoot down these aircraft is with the aid of long wave radar, which is far too bulky to incorporate into aircraft design, and so isn't really a problem. In any case the US Navy ahas already started work on a NGJ which would render long wave radar ineffective at identifying the aircraft.
And has it ever been used at all?
''The USAF has conducted an analysis of the F-35's air-to-air performance against all 4th generation fighter aircraft currently available, and has found the F-35 to be at least four times more effective. Maj Gen Charles R. Davis, USAF, the F-35 program executive officer, has stated that the "F-35 enjoys a significant Combat Loss Exchange Ratio advantage over the current and future air-to-air threats, to include Sukhois".''
And like I said, it will never be as awesome.
Based on what?