which class can kill tormented boss the fastest?

Andariels Rogue.

We barb

Lightning spear, stormslide, wwdd are your best builds, the gear you need to pull off wwdd tho is insane in comparison to the other two.

Every class can absolutely face roll tormented bosses solo with the right build at this point. I wouldn’t stress which one is better on that front.

I mean best to carry full party.

All classes can do this atm to the point where I’m not sure it matters which one is marginally faster.

Any class can do this just pick the one you think looks fun

This season, EVERY class is "broken". There's not a "best". The devs reiterated this in the recent campfire. The goal is to steer away from a "rgk" mentality. If you reallllllly want to know the meta... A lot of people are going druid/andy rogue. I don't play either. Was killing torm bosses in 4p carrying on day 2 with absolutely garbage for gear. I played rf rogue cold imbue. Followed dioxide's build on maxroll.