Did some ladderring with a Specially Defensive Tyranitar with a moveset of Stealth Rock / Crunch / Stone Edge / Fire Blast and found it very underwhelming. In this metagame there are just too many common Pokemon that can easily take out Specially Defensive Tyranitar, including but not limited to Terrakion, Keldeo, Mamoswine, Breloom, Tornadus-T, Jirachi, etc. I had a hard time just setting up Stealth Rock in many battles due to not having a safe turn to set them up as the opponent consistently had something in that threatened Tyranitar. As a Sand Stream setter, I personally favor Hippowdon who can more easily get up Stealth Rock as well and has access to recovery in Slack Off. In general, offensive Tyranitar sets are much more potent in this metagame than defensive sets. The Choice Band Tyranitar set is a powerful wallbreaker who can even defeat the likes of Skarmory, 2HKO'ing the bird after Stealth Rock in some cases. Choice Banded Crunch is just a devastating attack even against Pokemon that resist it. He can also easily pick off the number of OU Pokemon that are weak to Pursuit such as Lati@s, Reuniclus, Jellicent, and Celebi. The Scarf set, although not as common as it was in BW1, is still a good set that mixes power with just enough Speed. A fast Pursuit is very useful to put opposing Lati@s in a checkmate position which can open the gates for something like Specs Keldeo to sweep.