Guild Wars 2

People complain on the forums that if you lose consecutively, your rating drops, and you enter a vicious cicle where you’re stuck with bad teammates. Thing is, do your mmr really drop when you lose against a higher rated team? I dont know if it does or not, but if it does, I think it shouldnt. Pretty much it should work like old pip systiem, where if you lsoe agains a better team you dont lose pips, and if you fight a better team and you end with a high score you win a pip, this obviously traduced to rating. Like this, people on a losing strike, even when being matched with worse teammates and lose, can carry to certain score and so improve their rating.

I dont know if mmr actually works like this, if someone knows more about it please share it

https://wiki.guildwars2.com/wiki/PvP_Matchmaking_Algorithm
not sure how trustworthy but is the best we have.
The algorithm is Glicko2.
https://en.wikipedia.org/wiki/Glicko_rating_system

From the equations, it appears you lose points when you lose a game no matter what.
Know that RD is a positive number because it’s a square root.
s is a number between 0 and 1. so the expected value is a number in this range.
when you plug in s=0 for losing, the last bracket of the equation is a negative number, and the rest of the second term are positive numbers, so the result is a negative number. It may be a small one when your expected chance of victory is low, but it’s nonzero.

If this is wrong, please clarify.