Actually Shisui, Itachi, LM with sword immunity is pretty much OP. Some can be defeated, but anyone with even lower power can beat the crap out.

P.S. Too many people got Shisui, I mean literally...it was supposed to be rare ninja, but in SWB and my own server it feels like it's casual rare ninja in a treasure that people with 210 seal scrolls have pulled him out. It's just a big middle finger from developers in the eyes of those who struggled to get both Raikages for example, people even drew him out with 400 coupons in the wheel, it's like 20 draws and done... of course majority just wasted and didn't got him, but overall it's like half of the community got him, or more than half.