Rita is worse in terms of damage, but she has a very unique skill that makes ranged attacks unable to hit her. You can pretty much put her in the path of a ton of goblin archers or liches and see her become immortal for the duration. It's 30 sec i believe.

The new pirate is supposedly pretty good and she has triple shot like Bashira. I suspect Bashira deals more normal damage but less skill damage so they might even out on that.