Some small things are different then in DH, I am trying to collect them:
1. Righteous Fury makes double damage, not just an additional D10. Which makes any multi-dice weapons absolutly ridiculous.
2. overwatch can be made with any fire-arm
3. running away: not only a free hit is granted, but also a free shoot.
4. WS boni for weapon quality only applies to attacks, not parrying
5. during autofire, one can walk forward.
any more?