If MCH was a low tier in CC, then why almost every single game has someone playing this job? It's one of the most braindead job that you can play with because of the sheer amount of damage it can do + kills. This job just doesn't require any buffs at the moment. Top players play it because its good and damage pops off like crazy.

You have a bind and potential stun.
Drill is 18k damage with analyzed + it ignores guard. This is already serious and no other job can deal so much damage through guard. At least with basic abilities.
Chain Saw that adds huge 20% damage taken by the target which means that your LB is now even more dangerous.
Bioblaster may seem "useless" but its very good if people stack on points and in overtime. This is a killer dot.

Let's not mention Wildfire dot that can do big damage, shotgun, turret + shield. It's a bloated job.