I killed BIS EX yesterday for my first time as a MCH. Came out as 2nd highest DPS in most of the attempts (except for one), above the BRD, BLM, DRG and beaten by the Ninja (we made 2 different parties).
My max DPS was 626 in that fight (Im on PS4, so a guy ran the numbers for me. Not sure he counted the turret dmg or not though), which I dont think it was a bad value but I did messed up some hot shots and GB-windows in phase 3 because I don't have enough practice on it yet. Certainly there's room for improvment.

My point being: In my opinion, if you are doing +700 dmg as a MCH in that fight then u are doing VERY well! I do agree with Arkenne when he justifies the +800 MCH dmg has being pre-hotfix when we have RF + GB. If you do +600 then you are doing a decent job in ur DPS in that fight.


If anyone has an opinion about all this pls say it, I do want to learn more