So similar priced units from two different factions with similarly priced AT upgrades killed similar medium battle tanks at a similar rate. Are you arguing that Penals are being over buffed because they perform similarly to PF?
1) PTRS Penal a stock are 300 manpower infatry with 70 munition upgrade.
2) AT PF is a doctrinal 270 manpower infatry with 100 munition upgrade.
3) T-34/76 is tank with 300/90 cost
4) PzIV is tank with 350/100 cost
If those two infantries where equally good at killing those tanks (and I am not saying that they are) one would have to come the conclusion that Penal are most cost efficient since for lower price (taking account the MU cost) they can counter a more expensive tanks.
But the main differences, lies elsewhere:
Penal start with full AI and can downgrade their AI if they need to use AT
PF start weak and have invest in tech and mu to get good AI or invest in tech and MU to get AT and have extremely low AI
I think it's fair to nerf the AI of PTRS Penals a little in exchange for them actually working as an AT squad now. In most game scenarios PTRS Penals are going to take the place of AT Guns as non-TD AT since most players aren't going to side tech to T2 unless this patch drastically shifts the meta- so PTRS Penals need to actually work as AT Units if they/T1 are ever going to actually be used. I don't see why they shouldn't function similarly to their closest Axis counterparts of shreked up PGs or Fusies. In that vein I think we can consider removing the AT satchel or giving Penals a weaker "Target Tread" type ability to replace it. After all PGs and Fusies don't have snares and Axis is in same boat of having to build mainline infantry for snares... I also think it would be nice if PTRS Penals and Tank Hunter Conscripts were somewhat differentiated
Then we agree. Then the AI buff PTRS gets makes little sense.
But the real questions is why should Penal be able to do all that in the first place?
If T1 need an AT units make one available (either a new AT squad or an ATG).
If Penals are meant to do everything than designed as PF where they have to choose if they are going to be AI or AT instead of a unit that start with full AI and can then become AT if needed.