I was wondering why the game has heavy armor as line units and super-heavy armor as support units. I'm fairly sure that the size of these brigades, looking at historical units for examples, should be fairly small, i.e., support only.
As far as I know, there were not heavy armor regiments (brigades) fielded by any army of WW2. In all examples I can find, heavy armor units were battalion size, which would equate to a support brigade.
HoI3 has the heavy armor unit as a full line unit, which is odd to me, especially considering the super heavy is a support unit. In my mind there should be no difference between the units except for the type of tank.