in both my and your strats the tank is the only one taking damage and I'd wager there's not much of a difference.
Haven't had any serious issues in any heroic yet and done them all as of yesterday. The ultimate pug killer for me must be steelbender in BRC -.-
Current goals ingame:100 Mounts: Done Over 9000 Achievement points: DoneAll raiding glories:4/640 Exalted reputations:DoneAchievement whore since: June 2010!