Ability: Light Power
High HP ain’t gonna cut it in OU if they don’t have actually good Defense and / or Special Defense, in this Pignite and Emboar just can’t switch into Weavile at all.Also Pignite, Emboar, Klefki, Primarina, Keldeo, Skarmory, Corviknight and few others completely walls it.
And SD means it won't run Low Kick which means Cobalion, Melmetal, Incineroar and many others would also wall it.
Plus it weakness to Bullet Punch and Mach Punch means it could be easilt revenge killed.
Tough Claws weavile doesn't really look that impressive. It would not even be a top 3 mon in OU if it was available much less "broken".
And if it run adamant instead of jolly then it would easily gets revenge killed. Tough claws weavile is not even close to broken.
People don’t want to be forced into running priority, because if they have to, it’s gonna streamroll real fast against them if their priority user faints.
Weavile is already S- in OU atm; neither Pressure or Pickpocket do anything of real value consistently for Weavile, as both don’t fit well with Weavile’s fast, physically hard-hitting but frail stat spread. Triple Axel, while not 100% consistent, give it a STAB move that reaches 120 effective BP a lot of the time. Tough Claws will give it 156 effective BP on all three hits, and 78 with only two hits.
Knock Off reaches an effective 126.8 BP on top of knocking off the opponent’s item, and 84 effective BP on foe with no or Knock Off immune items is still good for STAB. This is on top of Weavile having it’s own priority, Ice Shard, reaching 52 which isn’t too much on it’s own but can cripple any potential counters, especially if Weavile used Sword Dance beforehand.
Access of Tough Claws is one of the reasons why Weavile got banned from AAA (Almost Any Ability).