Matchmaking gone wrong?
So I've noticed that when someone high elo duos with a low elo everything goes wrong. You might say hey they'll be against a high elo person on the other tesm as well so its fair but that's not really true. Its true that they try to get the same mmr for both teams. So lets say a plat duos with a silver 5, they'll put the other 3 people unranked or lower levels on their team and the other team will have people around b1 mmr. Im terms of mmr both teams are equal, but a bronze 1 against an unranked will probably do okay, while a plat against a bronze 1 will most likely get fed and carry the game especially if they play a hypercarry. Also the plat getting kills and doing good, their team will start listening to them while they control the strategy of their team to how to secure objectives and so on while 5 bronze1s would have a hard time leading their whole team as well as he is.