Mass plays an extremely important role when calculating charge damage, as demonstrated here
https://www.youtube.com/watch?v=_VmIAKHnqLc
The formation and depth of units is also used to calculate bracing bonuses during a charge. But fundamentally the war scape engine uses spacing scripts instead of unit collision, so units keep their distance from each other rather then shove each other around like in M2. I'm not a dev so take this as you will, but I think the answer to your question is a flat no.