Avatar with... 75k HP, 25k MP 23k M-Atk, 100% Mcrit, 15k Def, (Which also doubles from Lv. 90 Yellow set effect), 11k M-Def and who knows how much damage reduction.
1:24 - Tanking a WS with full fruits
10:08 - 2 shotting a crusader
12:08 - 1 Shotting a HE
18:38 - 146k Xtal Damage
If that's not OP then idk what is.