Another high damaging 5B combo, courtesy of Shirushi but tweaked a bit:
5B > 5C > Sekkajin > (dashing) 6C > DC > (dashing) 5C > 6C > (delayed) 2D > (dashing) 6B > (dashing) 5B > 2B > 5C > 3C (3057 damage).
The reason I changed the j.2C > j.C into 6B (it's only about 60 or so points of damage in difference) is because it whiffs against a lot of characters, then again, it might just be my shitty execution. That and the dashing 5C > 6C auto-cross ups against a lot of characters, it might just be my execution again but if anyone wants to give it a try then go right ahead.
Meh, I think I'll stick to 5B > 5C > Sekkajin > 6C > DC > 5C > sJC > j.C/j.2C > j.D > AD > j.2C > j.C > (dashing) 5B > 5C > 3C (2925 damage) for my 5B BnB since it's much easier to pull off and it's only about 150 points of damage in difference lol.