Grb is nice - but not good enough specifically against KV1, and TT AT rifles suck.
Now tell me at what BR Soviets have worse AT weapons than Germans?
BR1 PTRS is much better compared to Panzerbüchse or Boys AT rifle, and BR2 Bazooka can take out all BR1 - BR3 German tanks with ease, maybe Premium Stug being the exception.
BR3 and BR4 AT weapons for Soviets is literally a german copy paste.
The statement that Germany has better launchers is completely ridiculous.
Sure M9 Bazooka is worse than Panzerfaust 60 - but only in BR4.