"your proposed top speed of MACH-3 for J-20 under the MACH-2 J-20 extremely maneuverable/agile but at a top speed (your crap assessment MACH-3) has no/minimal agility because of g- force will tear apart J-20 if J-20 will try to maneuver at that speed"
Hey pakistani guy, I sometimes wonder, how are you going, to make it in this world, with your level of intelligence, and why are you in this J-20 thread, which does requires some intelligence, in some technical discussions.
Sometimes, I wonder whether you are really from Pakistan, and whether you are really an Indian, pretending to be a Pakistani, who were trying hard to act dumb, to make the Pakistanis look bad.
Anyway, I proposed 5-gen fighter like J-20 and J-22 have a top speed above Mach 3, because they have two very powerful engines (175kN for F-22, +210kN for J-20, whereas Mig-25's engine have only 100kN), and very aerodynamic airframe with very low supersonic drag, which with these two advantages, enable them supercruise at Mach 1.6, w/o AB.
And I further propose, because they have a very tough airframe, and have TVC, and plus canards for J-20, they are extremely maneuverable/agile. And even at Mach 3, they can fly much more than at straight line, unlike the previous generation of interceptor like Mig-25 and Mig-31.
What kind of g-force, they can pull at Mach 3, I, simply, don't know. But I am sure, it's going to be much better than Mig-25 or Mig-31, or SR-71.
"g- force will tear apart J-20, if J-20 will try to maneuver, at that speed""
I don't know what you mean by "maneuver" or what kind of moves. Of course, their will be a limit to what they can do at Mach 3, no doubt. Beyond that, they will fall apart, that's for sure.
But that will not stop F-22 or J-20 from being an excellent Interceptor at intercepting large and slow bombers, oil tankers, Awacs, and other large aircrafts, because those aircrafts have little maneuverability.
I do not propose J-20 or F-22 will do, or could do, crazy stunts, at Mach 3, like the Flankers at the airshows.
No need to.
They just need to fly fast and straight, at Mach 3+, toward those target, they intend to intercepts, and launch their long range missiles, from far away, like 200-300km away. Then, turn back and go home.
Without their oil tankers, Awacs, and other large supporting aircrafts, the attacking force would have no chance to succeed. They probably can't even go home, to their airbase. They would have run out of fuel and crash in the Pacific ocean.
Because of J-20's stealthy low observability and flying at Mach 3, toward the enemies oil tankers or Awacs, the enemy fighters would have much less chance of stopping them, than if the J-20 were cruising only at Mach 1.6 - Mach 2.0.
Do you get my drift now?
Chill out and relax. You are going to have a heart attack, at this rate.