Ashe's Q is ridiculous
Nobody gives you 4 seconds to stack your focus in teamfights. Do the designers actually play the same game as us? A four seconds open window for you to attack is nearly impossible to happen in teamfights, and that's just getting Ashe ready? Are you serious? She will deal somewhat close to other ADC's damage if she can active her Q right away without focus.
Here's a hint: go in last, target the enemy tank if you need to, and position safely. Do not even attempt to duel Xin Zhao or whatever, if attacked kite.