So your whole point is based on the RNG that the B4 player has. Got it. Or versing someone incapable reacting to the 10+ seconds delay in between shots.
Yeah, that the point with LeFH and ML20. B4 on the other hand has AOE and Suppresion and IF its not a total complete miss, you will ALWAYS do damage. Near hits will destoy squad health and suppress them (forcing you to retreat), close\direct hits will just down right destoy you. In comparecent to ML20\LeFH B4 chances of dealing damage\wipes are x10 highter in comparison to mentioned ML20\LeFH.
Also it doesnt have 10+ seconds between shots.
The mere existence of the B4 also means 400mp 50 fuel that could have went into a better/more important unit for this situation instead.
The same literally applies to any other howis in the game. What is your point? Fact is, that B4 is still better in harrasing\wiping then other howis by a mile, unless you need to destoy static possitions.
You cant take out a mobile unit with pure ammo investment. But you can do that with howitzers, which can cause a massive shift in the war economy advantage for both sides of the match. "But what if the howitzer hits something" is a trash argument and doesnt change that fact. It's not launching homing missiles guaranteeing to kill stuff
Muni vs unit cost (in teamgames) only applyable if one rush it. When you have already established army, 400 MP and 50 fuel isnt even comparable to 200+ muni. There is no way player spending muni to counter howis will be able to keep pase with the guy rebuilding howis.
Also, how muni is not that important in your eyes anyway? No the fact that you wont be able to throw nades, use abilities, give inf upgrades in case of a lost squad is somehow less important then 400MP and 50 fuel?
And yes, aurgument that "if howis hit something" is questinable, but again chances that you will hit something are incomparably highter for B4 now.
Instead of looking at the B4 from a perpectinve of "Its not OP, its just another good howi", compare it to the other howis and the way they are countered. Since they have same advantages and disadvanatges, compare what amount of damage they can do in the same environment, with the same amount of shots and in the same situations.
Thats why B4 is not okey right now:
CP cost - the same
Res cost - the same
Raw damage - B4 is better
Barrage cooldown- B4 is better
Burst damage - B4 is better
Chances to hit\kill with first shell\few shells - B4 is better
Stopping inf advance - B4 is better
Bombard static possition\deny zone - B4 is worst
And its not marginally better, its by far better.