This is to entice players to play BR IV gear at least for a little bit. I think most players will only use this kit as long as it takes to clear it and move onto BR5.
As it stands there are effectively 3 BRs: 2, 3 and 5
Ppl play 2 to stay away from 5, ppl play 3 because they will stomp or be stomped and they’re fine either way, and then ppl play 5 because they enjoy the end game content, and will curb stomp anyone that brings in the dregs from previous BRs.
kill everything they face at any angle until BR4, where they’ll kill everything they face at most angles?
the 76.2 and 75mm HE is already pretty potent, introducing an 88 at BR3 would basically cause another german stack, and the 152mm could probably delete entire caps because the reload would give it exactly enough time for the cap to fill back up with enemy squads
Not the question asked, so up to br 3, nothing a 75/76mm cannot do easily
Context of the discussion is prefaced on br -+0, So we are ignoring the large ammount of tanks that can kill BR 4 plus
Theres already a 105mm that you never see
I don’t know man. I encounter it from time to time.
It’s the 3rd pick when allies want to HE spam. 1st is CAS and 2nd is caliope.
I meant the german dicker. Should have clarified
I always forget it has 105mm. I confuse it with nashorn all the time.
Yet another reason why this flakbus should stay at BR4.
In comparison to dicker max, it has basically double the reload speed, very similar pene, not limited view, “turret”, bigger crew and AA gimmick.
Nonsense, M8 Scott is more common than 105 Sherman even in higher BRs.
And Calliope is very rare, commonly seen only after sales.
you mean “one reason”
very slow and awkward to drive, no depression facing forward, very slow turret traverse, open top, high sillhouete No MG. HE-TF shells that dont work so its not really AA, and Even if it did work like warthunder, Timed fuse are still next to useless as AA.
You are right, M8 should be 2nd place.
Still either same or way better than dicker max 
It depends on whether it has a pre-aim circle or not. If so, he might be able to kill less experienced pilots with its high rof.
It’s still clearly better than dicker max. And putting it in BR3 would make vehicles like dicker max and stug 3g a completely useless joke.
They both have a niche, and pay a hefty price for that niche.
Thing about the Dicker is its one of the best hill peakers there is because of its insane gun depression. Flak bus is the opposite…they do different things, and in the end, neither are user friendly.
might be a boon since they are new, but after a while of HE rounds detonating the whole crew or being strafed, it will join the dicker in rarity.
The way I see it is there are 2 real BR groupings at the moment, low BR and high BR. Both of these vehicles are much better than vehicles in the low BR, so it would be better to keep them out of those matches. Are they weak in high BR? They are far from optimal for sure, imo they would be BR 3. So I would support having them in BR3 should it ever get its own dedicated matchmaking.
Edit:
I haven’t tested the KV-2 very much, I am mostly talking about the flakbus.
Not a very strong tactic on Enlisted’s maps
Bout the same as shooting at planes with a large canon taking a tank slot 
Well currently HE-TF doesn’t act like HE-TF it just a HE round so it can’t aa(unless you want to use the AP round for aa but that probably not a good idea)