Not only does this game have one of the worst matchmaking systems in the history of gaming, I don't see any freaking sign from Riot that they are trying to at least balance out the game. Mage nerf is coming and I only play against yasuo, kha'zix, rengar and zed. Matchmaking being incompetent does not help. Forcing metas on the game does not help. Making roles useless DOES NOT HELP.
Is your complaint - relating to the image posted - about the roles and champion or current ranks of the individual teams?
I honestly don't even see what you're complaining about here, is this a normal game? Because if so, you really shouldn't expect it to be the epitome of balance, saying normal games have the worst matchmaking systems in the history of gaming is absolutely ridiculous, look at CS:GO's casual match making, you can be a silver 1 player and get put up against a global elite, it doesn't matter.
Also, you only playing against assassin type characters is probably the result of playing normal games, nobody is really trying to win - most of the time they're just trying out new champions. If you were playing ranked against an all AD comp, it isn't that hard to just build armor and make them useless.
