I think both their weak peformance pre upgrade and their good performance post upgrade are exaggerated. Having no sandbag hurts more than a tiny bit less close range dmg early on. But i dont understand whats special about Pfussies later on. They are somewhat between 1 Bar Rifle and 2 Bar Rifle and almost exactly as good as Penals. Long range focused Squads like Guards, bren Sections, Paras, etc shit on them. 7men Cons behind sandbags are still unbeatable without Obers.
They bleed more than Volks, while having a bit more time until their powerspike is over compared to volks. I played some games vs Pfussies in 2vs2 and i struggeled against some things but this unit wasnt one of these. I dont think that Pfussie builds are much stronger than pure Volks builds. I rather have JLI/Falls than this overrated unit.
Pfusies is a recon unit, share with grens the longest snare in the game and is
free, have great dps on the move, great DPS retention with model drops, has insane health pool.
Penals can only shoot, satchel is very situational + they are bleed more and God forbit they don't have good support, or else they will make you MP bankrupt.
Rifles are all out combat with a delayed snare + have some tech costs. They are great at what they do, but they bleed a lot because of the their best range + same situation as with penals, the models are more expensive.
So PFs are good combat unit with great utility. Also I don't think they are that good in 2v2 though, just because the commanders are meh. JT is very map dependent and Tiger is meh in that mode.