They technically have slightly more DPS than Multi-Cannons and slightly higher armor piercing value, but one miss throws that all out the window because of the slow rate of fire. Oh yeah, and it’s easier to miss because they have a lower shot speed, so your DPS will definitely be lower. Then there’s the fact that the shot speed is all over the board. Every different mount has a different shot speed, and every different class has a different shot speed, so you really can’t mix and match. Let’s say none of that bothers you and you have the perfect balance of skill and luck so you literally land every shot and you get that edge from slightly higher DPS... now you are out of ammo TWICE as fast as if you had multi-cannons. Seriously, I want to use cannons so bad, but there are so many reasons not to. Multi-Cannons are just better.