i have a question i need answered for my build

does aow poise stack with base poise? if so would there be little difference between a Milady with the Carian Sovereignty AoW and a Claymore with the Carian Sovereignty AOW with 41 poise as it has 60 poise on the Milady and 113 on the Claymore as the most important breakpoint is 101 poise?