I recently played with a teammate that has Prime Vandal, I have Elderflame. We switched skins everytime. I noticed that Prime is more accurate. What gives?

I just played a game where I was on 4 kills after 4 rounds, and then I got trapped in baths (Bind) and was getting shot at on the other side by 3 people. My team planted and walled over near Teleporter and somehow all 4 of them got taken o...