Glad you found my player card. Most people know I only play axis, I only provided by player card on my profile... also check through my previous post, i don't show extremely Fanboy. I don't show absured one sided balance issues. Pay my bills then tell me to play allies and I just might. I come home and do what I enjoy. I don't get frustrated, I say things how I see them. And it looks like there is plenty of others who think the same...
While you may not show "extreme fanboy" in your posts, your posts are generally consisting of x allied unit is ok / overperforming or x axis unit needs buffing or axis is forced into x.
Refusing to play every faction limits your skill at the game by a huge amount. Not only does it give you a skewed and biased view of units and factions, but it also blinds you to what is a balance issue and what is simply a player / lack of knowledge issue.
It doesn't feel like you consider OKW Schwerer to be an issue, despite the fact that it has been for some time (though it is killable of course depending on where it has been placed).
Brit "Sim City" without counter barrage is easily countered, you just need to know the proper ways of dealing with it. If a player is building more than 2 emplacements then they have a huge amount of resources invested into them and will likely have a fairly weak army. You need to use tactics and teamwork to take down emplacements in some cases (such as forcing the player to brace, waiting for it to wear off (or bothering to count and then pre fire) and then unleash whatever you have to kill it). Emplacements still take a decent amount of damage from fire when braced also.
If we are talking about when the Emplacement commander is used along side counter barrage from the base arty then this is a different situation and requires different tactics to defeat. Using indirect fire (excluding LeFH out of range) is not the way to counter this and you are in fact playing into the hands of the Brit / Allies if you try to defeat it this way. Once again the Brit will have fairly poor army composition if he is building lots of emplacements and will also be draining his munitions to upgrade them.
I would suggest you watch the Jove vs DevM ESL game with Jove as Brits who built emplacements. His "Sim City" was fairly week there and thats a player who won the past 3 ESL tournaments and sits at #1 in all 5 factions in AM.
Also you should consider that if you played all factions, you would learn how to counter Brit sim city by seeing how other players beat you when building many emplacements (unless you will tell me you can get #1 in 2v2 / 2v2 AT playing Brits?)
If you truly want help on how to defeat it, you should upload replays of your game losses so people can see where you went wrong and how you can improve.