I thought about some strange possible templates and I'm here to ask the opinion of the experts. I compared a 7 mech 2 medium tank division with a 7 infantry 2 super heavy tanks. (I wanted to use self propelled artillery but the comparison tool I used did not have these and therefore I used the tank counterpart). The first one has a production cost 40% higher, 40% less soft attack, half hard attack, almost double defense, 30% less breakthrough and 33 against 21 hardness. But the greatest difference is in speed (8 vs 4 with the 1940 mechanized model). But, if I understood well how the overrun mechanic works, it is worth. Imagine this: a tiny frontline or a very rich country allow to deploy only such units on the battlefield, you win a single battle in a point of the front, the enemy division retreat in the province behind and wait... overrun because my division on the offensive is at least twice faster (considering the province is defended by infantry, if not simply they retreat and keep fighting till that happens in another point of the front sooner or later). what happens next? They support the battle in the adjacent province, battle won, retreat, enemy overrun (of course if I have enough troops to fill all the provinces they can retreat into). Is that worth? Do I have understood correctly the overrun mechanic or is there a point I'm missing?