True, but only part of the truth. The rest of the story is that Tiger and King Tiger tanks were difficult/expensive to produce, and were mechanically unreliable.My uncle was a Sherman tanker. He noted the maneuverability of the German tanks, which could turn in place by reversing one tread while forwarding the other. What he didnt know, that the French learned in using German tanks operationally after WWII, was that actually using that capability made the tank even less mechanically reliable.
It was Hitler himself who was infatuated with size in tanks; he committed significant resources to the development of the mouse - a monster tank even compared to the King Tiger which never went into production. And which would have been dangerous to cross most bridges in. Bridge carrying capacity was an issue with the King Tiger as well.
The cost/producibility issue was expressed by a German tanker who said that the Tiger was ten times better, but there were usually eleven Shermans to contend with. Not exactly comforting if you are in the ninth Sherman, tho . . .
The other issue with the huge tank was its high target value for aircraft - that probably was enough to make the mouse impractical in its own right.