I did my placement matches for Arena Slayer last night with my group of friends. We won all 10 games together. They were all placed into Diamond 1 and I was put into Platinum 1? How does that make any sense? It’s not like I was being carried, we were all rotating being the top person on the team.
I think it’s a little early to figure out all the factors on placement. But if you belong at Diamond 1 you will be able to rank up pretty easily.