I agree with the above poster that asks for the spec of the group, I didn't know it what the group was until the follow up posts.

Definitely the key to heroics is having maneuvering down, escaping aoes or adverse effects, and anti-crowd control measures and recovery from them. You have to be able to quickly recover from a mass fear or similar effect. You just cannot autofollow the main toon, then tank and nuke from a camp.