Rank 57 in 4vs4 team as Ostheer and 163 in 3vs3.
As Soviet I play versus my own team if we are too many. Saying, I have friends. Games has to be funny.
Please, show your playercard. So we know if this is l2p problem or penals are really OP.
For my experience, OKW players got their HQs (T2 or T3) easily blasted by penal usually:
1. Get his army beat away by allies players and left HQs alone;
2. Do not buy mg34 to protect their HQs;
3. Put HQ to the allies players nose.
OKW T4 usually require player cooperation to destroy, one player draw fires and place smoke on that T4, another player send penal to threw charges. This is micros problem, doesn't mean penals are OP.
I can tell you that you cannot count one single OKW T4 HQ to stop a good Soviet player. A smoke on the T4 and your T4 is no longer fire at the incoming penals. If you think build a T4 was a hassle free option to stop the enemy, then you need to relearn how to play COH2.
P.S. I am wondering if you are really good at Ostheer. A Ostheer should know that penals are really hopeless to groups of LMG42 grenadiers.