Match making system.

Riot, is something wrong with the match making system?

http://na.op.gg/summoner/userName=taicune

Please look at his jhin game, 3/4/6 2.25KDA that game against Team melon - wukong. Please look at his game after that jhin game i mentions above.

Game 1 he is against all golds with a plat 3 on his team, gold vs plats? Game 2 He's play 5 against one bronze and 3 slivers, Plat vs sliver/bronze? Is the system broken?