Queueing is pretty stupid right now. It feels like anyone who played the PBE has a massive advantage and thus matches are decided based on who has more people that have played the PBE, which isn't factored into matchmaking. I'm not whining about myself, because I played the PBE, and in queue did fine, got fed, output damage, positioned well, etc. I just seriously mean the knowledge gap is causing a lot of people to play poorly (e.g. in jungle) or not expect certain item abilities, and if it just so happens your team has more of those people than the other team, which is completely luck-dependant, you're at a disadvantage from the pick screen.