>>A mech could do something a tank cannot do. Lean into the fire.

The principle in tank recoil is the turret is, in effect, leaning into the first movement. If you plot the recoil on a main armament you could see that. If there was not that structure and flexibility the armament would force itself off the tank when it was fired. To combat the recoil in a main armament like the M1A1 you would need a great deal of lean, think standing on your heels to fire a 109mm wheel mounted gun rather than 12 gauge shotty. That sort of thing is not going to come about until someone takes the majority of recoil out of a main gun with a more effective buffer. I was not saying it could not happen, merely that it could not now, it's simply a matter of physics and currently available technology.

And I wasn't arguing, simply stating a view, sorry if that offended you.