@Riot why you lying to us? at least be consistent in your lies.
From riot's matchmaking explanation https://support.riotgames.com/hc/en-us/articles/201752954-Matchmaking-Guide#q1. Another poster linked it, and I was so surprised, because I had never read that.
Step 1: Determine strength:
If a player is queued alone, the strength is determined by his personal matchmaking rating (referred to as MMR from here on out) and number of wins for that particular queue.
So, lets see this statement, from now on, and for the following example, we take into account that we always face the same quality of oposition, since the impact of that quality doesnt matter for us.
We have MMR, it obviously depends on the number of won games and lost games. But, obviously, two players with different amount of wins (one 10 and another 100) can have the same MMR, just because they have different amount of lost games (lets say 8 and 80 for the previous example, i know, that's not accurate, but nvm, whatever numbers, they can have the same MMR).
Now it comes to the second part of the phrase "and number of wins for that particular queue.". It implies that two players with equal MMR will be matched differently depending on the amount of wins. So, two players having same mmr but different amount of won games DONT HAVE THE SAME MATCHMAKING ANYMORE!!!. So, if two players have the same MMR, and different number of wins, what's the difference between those 2 players??? YES, the difference is PROGRESSION!
Now lets see the next statement in the riot's matchmaking explanation.
No. The system does not use your LP,** progression status**, tier, division, or any other piece of League information.
WHAT THE F+++++!!
Seriously, riot, stop lying to us!. Not only it is SO OBVIOUS that the system takes into account progression, but you yourself are telling to us that you are taking into account progression in your matchmaking description a few lines above, you are pissing on us and calling it rain.
Nobody in this universe should care about competing in this game, because it is A JOKE. Going through a bunch of unfair missmatched games just because you have good progression has nothing to do with fair competition.
You want to compete? ok, it's up to you, you should at least be aware that your progression will lead to UNFAIR competition. Wanna deal with that anyway? as I said, up to you.
At least riot should change their matchmaking description if they want to lie to us, to be coherent in their lies.