This MMR system though..

I just played with my buddy for his 10th promo ranked game. He was 7/2 up until this game. We start getting obliterated because of horrible team comp and miscommunication, lots of mistakes were made and the match ended early without a surrender. Pretty typical of matches now, which I personally despise, but I digress.

So he is staying super positive and encouraging his teammates, as they all begin to tilt and become toxic even to the point of feeding intentionally. After the match he was like, "I'm not gonna let this get to me. I did okay and we got stomped but we did okay." Now for my part, I was criticizing my team because of their quickness to give up and the enemy teams lack of sportsman like conduct. Through it all he stayed positive. He went to see his placement after being Silver 1 last season.

At 7/3 in promotionals, with most games finishing with an S or S+ ranking and having a 3 game and 4 game winstreak in there, he got Bronze 3.

You read that right. Bronze 3.

Let me tell you something about MMR and the ranking system. Last year I did my 10 Promos and went 3/7 with 2 of those games S ranked. I got Silver 4.

I had only 2 wins in a row and snuck past bronze barely.

So how does he get such a low Ranked ranking?

I want Riot to explain how, what, when, and even the why of MMR is the way it is and tell me they cannot improve upon it.