Two more weird things, which my hotseat opponent used against me in the past:
1. in Red Thunder you can set lowest quality settings for a bunker to get it cheaper (doesn't work in Battle for Normandy);
2. in Battle for Normandy sherman firefly vc couldn't destroy german concrete bunker (old tests: 1x bunker vs 3x shermans, less than 200 m - shooting out whole ammo made no efect multiple times);
Ad. 2: I didn't tested other shermans and other 75/76 mm allied guns, because we just banned bunkers for our games in CMBN. According to my opponent's tests - the same bunker was vulnerable to smaller caliber allied guns. And of course was vulnerable to bigger guns (german 88 mm in german vs german game).
Today tests (less than 200 m):
2x firefly against 1x bunker, 3x typical soldiers inside, 3 tests - 3 times it took about 15 min. to kill them/make them go out;
2x firefly against 1x bunker, full of elite, fanatic, +2 soldiers, 1 test - 1 time literally no effect, end of shermans ammuntion;
2x stuart against 1x bunker, full of elite, fanatic, +2 soldiers, 2 tests - 2 times it took about 5 min. to kill them all/destroy the bunker;
So it's still very hard for shermans, too hard in my opinion, what do you think?