Well that is rather sad, I personally tend to avoid Guards because their AT+button just seemed to make everything to easy. I didn't know they were performing so well. Gonk made another comparing different LMG squads vs Obers and Airborne LMG performed the worse. That just seems absurd for the price and muni cost along with lack of utility. The fact that guards were able to win seems to be a really big miss from the balance team, them winning 50% of the time was asinine.
Things like this really do reinforce the perception that specific builds and commanders were favored when balancing the game.
Sorry for rant.
I think guards alone are not that annoying. But what makes it really bad imo is that they're in stacked busted meta commanders.
Two of the guard docs have mark target, which is a nightmare if paired with their button ability.
One doc has 120mm mortars where it's obvious why they're super annoying. Another one has ISU-152 which can be totally game deciding if you didn't pick a counter doctrine. Then there is a very versatile one with recon, IL2 bombs and ML-20s. And the KV-1 one is nowhere near where it used to be but it's still good