I think you missed mine. Raiding is a team effort, and there's quite a few things, healer especially, need to take care of that can easily cause wipes. Dungeons don't even come close to touching on this. You can literally just heal through them all; there's a definite lack of technical approach to mitigation handling that is absolutely necessary in raiding. Even in Extreme Primals, outside of tanks using cool-downs, don't even touch on this.