I though about this today.
would a matchmaking with way more tanks of the same class and then only a few tanks of the other classes make things more even?
lets say battles with 10 heavies on each side. and some TDs in the back.
or 10 or even more Mediums with a couple of lights?
scenario is you have 3 Heavies on each side and a bunch of mediums. all heavies go heavy flank and 2 mediums of each team.
Heavies a brawling, mediums are supporting.
first team kills a Heavy of the other team. not is is 3 Heavies vs 2 with Medium support. so 50% overweigt on one side.
the 3 Heavies start rushing, kill the next Heavy and then all rush the last. support mediums can't do to much.
now if it would have been 5 Heavies on each team, I think losing 1 Heavy would not have made such a huge impact on the situation.
same with mediums. Heavy tank can't do much when he is getting rushed by a bunch of Mediums. but a medium is mobil enough to get out of dodge in time.