Against light tanks, the wehr atg isn't really better than what the allies are using.
On top of that, all three allies player have light tank of their own and Inf atw as well. ( I still dislike PTRS penal but zooka and PIAT are fine).
the wehr technically have atg, snare, light vehicle, and inf ATW, but both snare and light vehicle are poorly implement. The 222 only have a very short window of opportunity before it's completely outclassed by the light tanks. The schreck is impractical as an option.
Snares and Atg alone are not enough. This put the wehr on the backfoot before stugs. In a 1v1 it's also where the allies effectively win the game against a wehr player.
in terms of early game the types of anti-tank weapons are: snare, ATG, light vehicle, inf ATW.
a faction should have at least three types of early anti-tank weapon to be considered acceptably defended against vehicle rush.
The game release british only had the Light vehicle and ATG, and that's why they suffered before the PIAT change.
right now the wehr effectively only have the snare and ATG. Neither the 222 nor the panzergrenadier are practical. Making the panzergrenadier practical would give the wehr three different type of anti-tank vehicle.
222 window is a bit small, i would much rather a 221 in t1 (mg42 was moved to t0, so there is a "slot" to help with sniper cheese with the 222 upgrade at bp1- 2 birds 1 stone)
Wehr's most effective option, like ost themselves is defensive - the teller.
Because ost lacks a great vehicle allied players over extend and can lose their tank in an instant.
But what ever changes are needed a 360 degree no set up retreatable AT gun sure as shit is not it.
(Also i agree in part about AT penals, imo the AI and AT need to be a choice, not a progression so the choice can be exploited)
@stug life, i forgot about that big lad so point. However the only times i HAVE seen it (even post buff) it was smashed long before it could 2 tap, but yes, you are correct