This is not a balance thread, just testing various SMG units on test map at point blank. I originally got the itch a month or two ago, I was using PPSh Airborne and OKW went IR STG as I kept catching him off guard. Needless to say PPSH got shutdown but I switched to LMG so no big deal. I posted a recent game with 2 scout cars and AssG, OKW this time made IRSTG to counter but it didn't work out as well so I did some testing just to check.
IR STG beat Penal PPSh/Airborne at Vet0, Airborne when both VET3, but loses to Penals with both VET3.
As Airborne need camo to get bonus in real situation the IR detection would shut that down.
AssG/Shocks mop the floor with them.
For the hell of It I tested Shocks vs AssG, at vet0 Shocks win but at VET3 AssG pull the upset more often then not which caught me by surprise. Shocks dominate PPSH Penals, but PPSH Penals can beat AssG when both VET3.
SHOCKS stomp PARAS and Rangers
ASSG lose to Paras and Rangers at vet0, Paras with vet, but goes either way vet3 Rangers.
Edit: None of this testing was scientific in any way shape or form was just testing for fun.
Thoughts:
Even though IR Obers don't really win anything close range their mid-range performance along with ability to negate cover makes them a pretty good choice as real world situations will most likely have at least one squad closing in on the other.
Shocks are beast from the get go, not that was a surprise.
PPSH Penals put out a shit load of damage, they give shocks a run for their money but their inability to get close and clunky upgrade path makes it a nonstarter for most.
Airborne Guards are the weakest if looking from a base damage/durability point of view. However, cloak and smoke can give them the edge although their cloak is the worst. The biggest surprise was even after the PPSH upgrade I noticed that I could give them 2 more weapons. It may never happen but a double LMG cloaked Airborne could be cool.
AssGuards are fairly meh at VET0, but AT Vet3 they gave everything a run for their money except PARAs as a lot of matches had a slim win for AssG or massive win in favor of Paras.
Paras seemed to be fairly good against everything short of Shocks, not good enough with test mods to get a good test with Tactical Advance.
Rangers disappointed me the most, while they did decent I sort of expected them to dominate a bit more since they start off with good Rec Acc, however Soviet VET keeps it closer than it probably should be.
I didn't test Falls too much as they really need their camo to get best performance. They really should not be used outside of cover.
you forget StormStrooper MP40 and Volk MP40, Ass Rifle/Tommy and Pastisan PPsH

Still, Ranger SMG based on their pure raw power NOT tactical unit like Para, Stormstrooper, osber SMG...v..v.