With the recent changes, I believe there is a requirement for units to have differentiated range damage and melee damage.
They can be termed differently, "Artillary damage" and "Assualt damage" or whatever.
A mixed team may have 700+ damage, but at range, only the artillary in the team is doing damage, rest is from tanks, Cavs, AC, Manpower, etc.
This is clearly better than players splitting armies to see how much each of them are doing - or opening a calculator.