Heavy assault guns like: SturmTiger, ISU-152, KV-2 indirect, Brumbar, Dozer AVRE, should be better at dealing with Fortification like UKF emplacements, 88s, bunkers, flaks, trucks...
Unfortunately that is entirely irrelevant to the game, due to the fact that much more common units, despite technically being a bit lower DPS against emplacements, are not only much more commonly used, but therefore more successful.
My worst enemy when having my emplacements attacked? Mortars and AT guns. Cost less, comes earlier, moves and shoots faster, and the enemy can deploy more of them at a time.
With exception of Brumbar, the vehicles you list are all doctrinal, and many of them come in commanders that aren't versatile or common.
Personally I agree these vehicles should do a bit more damage against emplacements, all of them you listed are T4/ end game call-ins (and of course expensive), so it is not like you can just roll out a Sturmtiger the minute you see them build a Bofors.
But again, common units already fulfill that role almost to the point of redundancy.
And I agree with Lucas Troy: emplacements need to be tough to make up for the fact that they are artillery magnets and cannot move to save themselves. Every unit with long range weapons are technically suitable counters to emplacements.
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cblanco ★ 
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