Except the ST doesn't cost only MP, it's limited to 1, has 45 range instead of several hundred, and whatnot and so forth. Stop trying to compare apples to oranges. It would be like me trying to compare Sturmpio's to a KV8 because both do good infantry damage.
Just get rid of the repair bug, problem solved. But if you think the Sturmtiger is "broken" on the level of the old B4 your nuts. Since literally every match people would go B4, were the Sturmtiger still isn't a popular unit.
Except B4 means you have no heavy tank, it's countered by 2 clicks, it's immobile, it does not have precision strike anymore and you can't afford more than 1 etc...
You are so one-sided here...
Get rid of bug? Sure, but you said that bugs are important for balance and since bug is not fixed ST should be nerfed, right? What about rilfe nade but with too late animation? Nefr it?
Or Jadgtiger extra shot when using pircing shells? Nerf it to the ground?
ST isn't popular? Since the patch Elite Armor is in loadout of almost everyplayer.