Its not that combat is bad, its just watchman has better mechanics for pvp. Combat is full of procs that lasts 6s or so, pvp is full of stuns, snares, and cc in general, which interupt your rotations and thus procs very often.
The best solution for combat imho, would be double the duration of procs, but cap their use in the process, similar to zen.
Nothing more frustration to use precision strike and then eat knockback or something and missing the proc.