I think that Brick Break shouldn't be an option on the recover tank. What does it hit? A reliable OHKO on Tyranitar is nice, but it can't do jack to you and nor does it hit bulky waters hard enough. Waterfall/Stone Edge coverage is enough and isn't really enhanced by Brick Break. Mach Punch, Revenge and Roar should be the options for that slot. Mach Punch allows you to stop Stratagem as well as basically doing the same job against DDtar (you take one hit in any scenario where it DDs on the switch, regardless of move). Revenge should be the "power" attack and Roar just helps with random stuff like Gyara and Mence and scouts in general.