Reference: http://www.d20srd.org/srd/monsters/devil.htm
Barbazu's are meant to have AC19 according to d20, using saw toothed glaive as a weapon.
It can use it's natural claws as well.
Full Attack: Glaive +9/+4 melee (1d10+3 plus infernal wound) or 2 claws +8 melee (1d6+2)
Currently it seems as though they are built like dragons, with a huge number of attacks and huge to hit and damage (able to pass stone skin on all hits).
Barbazu too powerful
Re: Barbazu too powerful
Should be more manageable now.
A goblin, a trickster, a warrior? A nameless terrible thing, soaked in the blood of a billion galaxies. A most feared being in all the cosmos. Nothing could stop, hold, or reason with it. One day it would just drop out of the sky and tear down your world.