Balance of Robo-bro

All of robot's(dinno his name) skills are literally weak comparing to Comando. He can't use his machine gun without switching off rail gun, his cluster charge is very narrow situative and effective only against big groups of ground minions. Rail gun has low fire rate and his damage is ok against small bois. Machine gune is a sick damage dealer but bullet spread is so bad, that you can't even kill boi, flying 10 meters above you.
We need loot reducing spread and mb making rail gun not an alternative for machine gun but a separate skill.