Heatran LV.X just is too good to be used just for Moltres IMO.
But......since the point made by people, the discussion lost track of the original topic....
I think it would need some Plus Power and Buck's going on. Even with the 100 damage per turn output, it can't touch high HP Pokemon, especially with Snow Point Temple in play.
Also, Psychic Bind and Psychic Lock can hurt... You might want to be prepared for that as well.