My point is if it's not going to do jack shit then it's unnecessary and should be either removed or buffed.
It's not going to do jack shit to tanks. It's there for infantries.
Same as how Abrams' cannon is not going to do jack shit to infantries. It's there for tanks.
By having both, Abrams is a versatile tank capable on battling against both other tanks and infantries.
Basically in 3.0 it was functioning separately, when targeting tanks, Abrams only use its cannon. When targeting infantries, Abrams only use its laser.
But in 3.3 now both functioning at the same time to either infantries or tanks, with no penalty to ROF of either weapon.
tl;dr
The cannon is there to fight against tanks.
The laser is there to fight against infantries.
If you're expecting the laser to be effective against tanks, you're doing it wrong. It's there for infantries in the first place.
It's just that both weapons function at the same time to any target in 3.3