I completly agree with above.
No brainer AT.
You don't have to make any tech decisions, like "do I need handheld AT or maybe faster tech?" "Do I need weapon racks or ambulance or captain right now"? "Do I need Pak40 or PzGrens?" Do I need fast ZiS gun or maybe I can get another maxim before Luchs hits the field?" etc etc.
Even for PzGrens it's not that easy. You have to choose if you want great AI squad or great AT squad, plus you hardly can blob them effectivly.
Superior handheld AT on a most basic squad with no tech decisions is just really, really bad design.
Not to mention their utility. They are hard AT, they can clear garrisons, they don't lose AI power after schreck upgrade, they get insanely fast vet 5, they can deal with CC units thanks to infiltrations nades. In other words, quite often you can win game just by Volks.
Now try to win game just with Cons or Tommies, Grens or even Rifles.
I have epic screen during trol 4v4 game with 9 volks and 600+ fuel float or so

Sure, it was 4v4 but even in 4v4 you can't win by using 9 Cons or 9 Grens.