Last Chapter - Question (Spoilers)

[Lord Commander Dante]

Guys so i'm on Bahamut Versa fight at the moment, and i'm playing on "Action" difficulty.
Is it just me or is there a dps check on his one shot mechanic? I can't seem to pass the dps which is required in order to break his attack cast.
My team is level 48.

[Night]

Not sure what compo you have but do some of the quest that require you to kill waves those are the quickest way to level up. Also complete secondary quests to get more skill points some give you 250-300

[≧◡≦]

Depend on who character you use. Also upgrade your weapon and masteries and sigil.
But your level seems enough, since I beat the boss on hard at around same level.