(A) Why do you try to project relations conerning squad wipes from totally different types of RTS onto CoH2? CoH2 is more tactical and about preserving squads and preventing to lose them to super units/abilities being granted the chance to react in order to safe them.
I can neither tell from my experience nor from replays that OKW/Soviets do necessarily float more MP than USF/Ostheer. It is dependent on many factors like winning engagements, map design and RNG. If you win engagements as USF in the greater time of the game without losing too many models and use heal you clearly float MP. If you lose many models as OKW or even squads due to bad play you will not float MP or you will be temporarily at disatvantage if you do not replace squads. There are campy situations in maps like Langreskaya where you do not fight much. Consequently, MP float on both sides can evolve. What I am trying to explain is that MP float is not necessarily dependent on faction to 100%.
(B) The Axis tanks with squad wipe potential you list are either doctrinal (Tiger and Tiger Ace) or come very late (King Tiger) or can be easily dogded/engaged by skilled players (Brummbär and Sturmtiger). Sturmtiger can maybe wipe some squads because it would come surprisingly as nobody would expect it due to not being a viable option but apart from that first surprising strike skilled players will prevent further damage coming from Sturmtiger. Sturmtiger as well as Brummbär bring you in the situation where you will not have enough fuel to produce or call in tanks which can handle late game vehicles from Soviets or numerous vehicles from USF.
Ostwind is quite powerful if used correctly but counter reaction come swiftly. Soviets whilst waiting for call ins could have problems to deal with it. But even then you are exposed to IS2/T34/85s without proper PaK40 management.
Why do you think Axis has more squad wipe potential than Allies? I disagree with you in both numbers and efficiency.
You completely forgot demo charges, Katyusha, Scotts and B4 (which can be easily countered by Luftwaffe though). Not to mention that squad wipes like these from Tigers can also happen whilst using T34/85s. Mortars and Katyushas can use precision strikes which cost munition but are efficient enough mostly resulting in instant squad wipes. ISU-152 takes time to reload but is still able to wipe squads regularly. KV8 can definitely wipe squads when you catch them without AT support covering them.
Furthermore I do not understand why you compare HE Sherman with doctrinal Stug E.
And doctrinal Bulldozer is not worse than Brummbär. Bulldozer comes earlier, at a lower cost and wipes infantry more reliably.
I'm comparing pure math game vs game with RNG involved. It's just my personal feeling that pure math games are boring. It's the matter of taste and nothing to argue here.
Whenever Im tired after 12-14h on feet, I play 4v4. As USF, late-game is always hard in terms of man power. It's because of many things. Rifles dying like flies in late game and me being tired. Yet when I pick up OKW, I can blob like hell Volks with Fusiliers, forget about any tactical movement, expose mysefl to losses, yet I still have MP to reinfore.
They are doctrinal, just like Soviets counterparts but about King Tiger I don't agree. In 1v1 it's very late unit. In 2v2 it's late unit but in 3v3 or 4v4 it's damn early unit. 14-18min (depends upon map control and doctrines). Sometimes your first T34/76 hits the field in same time when King Tiger.
I'm comparing units, so demo charge has no place here. Katy is very powerful at wiping squads but same thing could be said about Stuka or even PzWerfer under right circumstances.
Scott has no counterpart so I skipped it. And B4 is powerful, but right now almost no one uses it - at least I faced only one player with this doctrine since patch.
All vehicles can wipe, but numbers are agasint T34/85 when comparing to Tiger.
As for mortars I said eariler that they are a way better in terms of wiping than Axis ones so I don't know why you brought it up.
Bulldozer is cheaper but it does not come eariler (only in 1v1). In 2v2 and above OST player can get Panther or Brummbar around 15-17min with good map control. I belive sometimes it's faster than 9CPs. What's more, Brummbar has bigger AoE and less scatter, can fight vehicles cause of better penetration, has more health points and better armor. No wonder why Bulldozer is cheaper.
I compared HE Sherman and Stuge E cause they are used mainly for the same purpose.