@ShootinStarmie in the future don't use usage-based arguments -- they prove nothing and are not reflective of the Pokemon's capabilities. Well in any case, @alexwolf, saying Adamant Garchomp is viable is like saying Modest Keldeo is viable -- a pretty funny joke. Giving up outrunning non-Scarf Salamence, +Spd Kyurem-B, Timid Volcarona...I don't find that acceptable, especially when each of these Pokemon can hit you hard. CB Haxorus is pretty damn strong, but it faces competition from Bandchomp for all the other reasons you mentioned. It's slightly less powerful -- Adamant is not acceptable though. Haxorus also boasts access to Superpower, which lets it smack threats like Ferrothorn and even Skarmory harder. It also gets access to Dragon Dance and Swords Dance, with more Speed and power than Dragonite and a lack of a 4x Ice weakness. B-tier, I would say, is perfect for it.