Wait...how can Tyranitar have Iron Tail covered? And it won't know Earthquake. Earthquake hasn't been used as a move in the anime since, I think, AG (?). Especially after 2011, it's not gonna happen, so find a different Earth move to cover that.
Not that I would think that Alain's Tyranitar will wind up having Earthquake, but I wouldn't be surprised if we eventually see Earthquake again given that we have wound up seeing moves like Blast Burn, Lands Wrath, and Bulldoze that all wind up having an effect on the ground.