Heavy armor, is the largest tank that is still practical, and from our knowledge of WW2 and post-WW2, 70 tonne is as heavy as you can get.
I would prefer we had King Tiger(and similar weight tanks) as super-heavy tank, then, they could actually be useful!
Soviet army, for example produced notable amount of IS-7, but eventually tank was dropped since it was just too impractical for Soviet rails.
There were American prototypes of similar weight,...
It just seems like a lost opportunity for paradox, to include tech that is actually useful, as opposed to stupidity of Maus.
And guess what, sometimes a discussion about a certain thing can also lead to a tiny part that is not connected to the OP without being off-topic. I don't see what's so hard to understand about that. You are simply moving the goal-posts time and time again.
Oh, look, you're wrong. He was talking about in-game units.