"I'm sure you get this all the time but i could use some help. please tell me why i am getting rocked so hard in heroics http://www.wowarmory.com/character-sheet.xml?r=Tortheldrin&n=Seik"
I don't mind helping people but I'd much prefer you email me a question of this type rather than leave it as a comment on a completely unrelated post. You will find my email address to the left side of the page.
"rocked so hard in Heroics". So it seems the major concern is the incoming damage from Heroic mobs.
Your gear looks solid. 12.5k hit points should be enough for heroics (it's more than I had on my first Slave Pens run), but you and your team will need to be on your game.
I feel you'll get more threat out of 1 hand specialization than you will out of Improved Seal of Righteousness. And if you are getting "rocked hard", mana certainly shouldn't be an issue so I don't think the points in Divine Intellect are well spent.