Heavy tanks frontal armor moves on a wide-scale. Tiger is on the lower end of this scale.
And there is nothing wrong with it, given its gun is inferior only to that of KT.
Tiger was on its sweet spot before, but now the TD buff is an indirect nerf for all heavies AND panther.
TDs however were not. They were too unreliable out of the gate and too good when vetted.
Now they'll be more reliable out of the gate and more balance once vetted.
Yes, tiger and panther will feel that, because these are primary targets that benefited from lack of reliability of allied TDs before. It doesn't mean there is anything wrong with that.
Tank destroyers counter tanks. Panther and Tiger are tanks, if you can't get in range to shoot back at them, you're SUPPOSED to be punished by TDs.
Even before this Panther often provided a more cost efficient solution over Tiger. I think its pretty obvious how will these changes move the scale.
Purely situational and dependent on opponent army comp.
Vs armor heavy builds, panther was superior, vs inf heavy builds, tiger was and is superior.
Tiger is not meant to be superior choice no matter what.
That goes for any other heavy as well.
Its not DoW2 super unit you'd always want to have, but another specific unit for specific scenario.
Put these lines together and see how this game works in practice.
You should take off these krupp steel eye patch armor plates and take your own advise.