I disagree that everything should be fully hard counterable without doctrines. After all the game is designed that loads of stuff is OP when used correctly in the correct circumstances.
If everything is counterable stock, that frees people to brainlessly pick whatever is the most OP commander.
When you pick a commander, you can help to force enemy to need to try counter what you are doing, often with their commander choice, this is an important mechanic which adds loads of depth of thinking and strats.
Its how the vanilla game was designed with Ost / Soviet...
Fuel wise all factions are pretty much the same, MP wise they differ but not by too much.
Compared vs USA, Ost has to waste time building structures, and USA gets 'free' units as part of the tech up.
All Im trying to say is the factions are totally different and just because one gets free nade/snare as part of building their T1 building, doesnt mean others should (they get other bonuses instead).
The AEC with its stun shot and the sniper with its vehicle crit were supposed to be Brits versions of snare.
Sappers were given snare to slightly level the playing field with other factions snares.
So I don't see why AEC needs to have such a powerful stun ability. If it was modified or changed to another ability, that would solve it being so incredibly good Vs medium and heavy armour.