Mind that in coh1 all team weapons were 3 men. And nobody complained. The only issue I can see is that precision strike, though it's worth mentioning how much more effective dps wise was every wehrmacht team weapon than soviet one. And you could reinforce them all the time with flame ht.
There you have it, coh1 had 3 men weapon teams for all factions yes, but in CoH2 vanilla you had soviet weapon teams with 6 men facing 3 men Ostheer weapon teams and had the tools to one shot the Ostheer weapon teams whilst the Ostheer weapon teams never had that capability because of 6 men. That wasn't anywhere near fair so they changed it.