You cant compare Tanks with other expansions. Each time they changed so much. They reason you Druids and DK tanked sarth 3d was due to the incredible high amount of Stamina they had. Its much closer now then it was back than. Now AM is what tanking is about.
Back in BC the only two tanks you could use where Druids and Warriors, you jsut wanted a pala for third boss in sunwell and MH trash. Not seen a single tankpala in WotLK, tbh.
Still you cant compare between expansions.
@firefly: I would wonder if T&C would show up on the meters and sacred shield would not. Would paladins get the mastery buff that druids got and druids the AM nerf. This thread would be so full of druid op crys.