That's intended. Pgrens handily win at close range and mid range vs conscripts. Lose at long range.
just like with shocks you have to use shot blockers or move from cover to cover to get in. You can't lol charge anymore like in previous patches. StG44s also have the best medium range (15) damage output and you only need to get to that range to start putting the hurt on squads.
The only "buff" I would give to pgrens is a cost reduction in build time and reinforcement.
Well considering how much later PGs come, how much they cost vs conscripts that you get off the bat, and how losing 1 man in a PG squad = 25% less firepower, a slight armour increase is justified I think.
My only gripe with panzergrens atm is how frequently you have to send them back to heal and reinforce. Considering how expensive they are they should have more field presence than they do currently instead of having to resort to guerilla ambush tactics. Even in a straight on fight that the PG wins may still require you to send them back to base because of how much damage they took.