I'm full AA, full raid gear, and a healer merc who was full AA at 110. Killed 2 con Blue mummies solo pull. it was NOT easy. 3rd mummy killed me. I tried again …. pulled another solo blue con mummy and burned FULL discs. He killed me. Those dudes are tough!
It all depends on what you're killing. I was tanking five mobs at a time in some places no problem, but drovalgs on floor six is rough with even two if they get multiple dots on you.