I love AAA Gatling vehicles. They hammer everything in CM. If you were to replace the main gun on an M1 Abrams with those Gatling cannons , then let it pivot up 90+ degrees and add an armored ammo cart behind it, I think you might have a Mk. 1.0 Bolo (or maybe a Mk. 0.5). The cannons don't kill tanks, but they blind them. They chew up APCs and I won't even mention what they do to infantry, poor bastards. They are a must have for clearing out city blocks. But as was mentioned before, their Achilles heal is their ammo supply.
I once used a 1/2 dozen of them to help defend a town against an attack/assault QB. I was doing great until some enemy helicopters showed up. Dang AAA shot down all the helos and used up practically all of their ammo. There went my uber-defense. Lost the battle, but did I ever make the enemy pay for it.