Checkout your presence stat. If you have a lvl 50 human that is +100 and then +10 for every companion on each class you have that has been through all conversations. It adds up fast if you have a few alts. With higher presence companions have significantly higher power and HP - so maybe that is a factor. I havent been able to play much since the patch to notice any AI changes but some of those may have occurred as well.

Roll Tide from Black Vulkars :-)