If you want a sample of how the 30mm round from the Hs129 will treat tanks. Offline swap out one of the drones for a T34 either model. Up the Ju87-G2 with the convergence pulled into about 200. Fly at the side of the T34 1000ft alt diving into attack from 1000yds. At sub 100 tap the trigger then pull out from your shallow dive. Make sure you hit into the side. I found at a slight angle down shooting into the side armor, or just under the skirt. The T34 died from a single round out of either gun. That is how ultimately the Hs129 pilots got their kills on Russian tanks including the heavies. Sub 100 shots with the tungsten carbide core rounds.
I will bet we won't get the BK 7.5. It killed all Russian tanks with a single round including the Joseph Stalin. Shooting at ground targets the shell was equivalent to a 50kg bomb.