I was talking nondoc as Esxile talked about superior stock elite infantry. If you add doc in, then PF blob shows up by midgame and they don't even need Obers. Hell they can just meme with Falls or in the case of UKF (ab)use JLI until the UKF player RQs. MG34 is not a real issue imho considering the plethora of USF smoke abilities.
Realistically you won't get PGs that quickly, unless your opponent is being strangely lax (1v1) or it's teamgames (which is another matter entirely). Having such a weak force out there is asking to get shot to pieces by allied mainlines outnumbering you, esp Rifles. To that end OST extremely often get a Sniper instead vs USF, which slows down the arrival of PGs even more.
Didn't know RM poped out fully equiped with BARs...
When PG hit the field around 4 minutes there are at maximum 1 BAR equip on 1 squad when the munition isn't kept for zook on the lieutenant. So the PG is at that time the best infantry on the field.
When Obers Hit the field, Volks are at their Peak, they're fully equipped with STG and RM usually have their own 1 BAR on each squad making them slightly superior to Volks but worse on the ratio MP/bleed. Obers hit the field around 8-10 minutes when you're starting equipping x2 BARs on RM and once they reach vet2 they simply dominate everything.
Sometime you should read those patch notes and balance team's comments, you'll understand that what I'm describing is as per their design, I'm not inventing anything here. Everything has been made in the last patches to reduce Axis "inferior" infantry on the early and mid game while keeping their superior infantry strength on the late game. AKA PG available before T2 built, Obers available before Shwere wagon fully UP.
The "bleed" or manpower issue is just a resultant of those changes, I'm not agreeing with the OP though because I don't think that its USF that bleed too much but Ostheer and OKW that don't bleed anymore, I've been watching many replays in the last months on focusing on this particular aspect of the game and OKW never bleed even when pushed back. You really have to fuck up extremely hard to feel the bleed as OKW.
One of the major side effect of this lack of bleed allow the easiness for OKW and Ostheer to build 2 Atgun midgame and render USF light and mediums tanks useless increasing the aspect of being incapable to bleed their opponent while bleeding a lot.