After farming for few days at Elite maps, i think i will remove 3rd skill of Chest Splitter and add to 2nd skill of Axe throw for tanking since the 25% chance to stun boss are quite useful in my opinion.

Basically skills i used during tanking are Chest splitter to counter wind-up, axe throw, charged horn of renew and normal attacks.
Uses 0 pot if i have another warrior with HOR or healing mage. Aggro is still with me as long as i use Charged HOR, axe throw and Chest splitter consistently.