Another fair weather argument. Things don't always go to plan, sometimes you have no choice but to be aggressive and that the pak shot. But its a long stun time and I think you can work it to be a double shot as well (quick reload) but i'm not sure about that.
No, you can't. TWP for Pak-40 is a "buff" for 4 seconds that gives stun effect to its shells.
So, basically it is "your next shot will do stun".
Tiger Ace on the other hand indeed do surpass cooldown of main gun, so it can instagib Jackson with triple shot in like... 4 seconds I think. Shot, TWP, shot. Done.
Look, I agree that it may smell like bad design - an ability that makes loss of control with no counterplay.
But I really feel that Wermacht need it.