If my headshot percentage is fairly bad (12%), would it be worth using the phantom more than the vandal considering I’m not fully taking advantage of the one shot capability of the vandal?

I've been a phoenix main since last July. I loved playing him even though not all matches were good. He helped his teammates, entered and created space like a god and his kit was perfect. He has a molly, 2 flashes and wall that has saved my...