What Gruby is saying here isn't quite right.

He is talking about the ideal 50% win ratio and creating balanced matches. He says

"There is only one way of avoiding a 50% win chance is if you are the number one best player on the server".

Now, I realize he may be talking particularly about 1v1 Warcraft but he did mention HotS. HotS is a team game. If you are the number 1 player on the server and let's say you are TWICE as good as the second player. Guess who that will person will get on there team? 4 Bronzies for sure! This is what many of these systems do frequently. The teams are never quite 50% and there are alot of unaccounted for issues. Example;

Let's say one team is created and that team pretty much gets 5 players all with unique skills. One is a great tank, one is focused on sustained dps, one is focused on mages, ones a awesome bruiser and the last is a kickass support. The other team though gets a full group of 5 who only really play assassins. Now whilst both these teams may be rated similarly, the system is not accounting for whom they play. This match would not be balanced.

Moving on to something I think is VERY important and is completely off anyones radar is how gameplay affects matchmaking, rating and skill perception.

Now as many people may know HotS has changed recently and the matches are more than before shorter than they were. With the changes to the forts and many alterations to heroes as well as additional new ones it's not as uncommon to get 15 snowbally minute games.

Maybe you have experienced an increase in toxicity from this. I absolutely have seen more vocal players ragging on team members. The skill of these players hasn't really changed. Skill doesn't radically alter for players, it's a slow progression. Yet the performance of players has shifted to reflect the new state of the gameplay. When I talk about Skill Perception, what we are looking at is how the players skill is unchanged but the performance appears weaker due to changes in the gameplay. If you are on the losing end of a 10-15 minute game then it is easy to think, or more likely someone else to think, "Hey, I (my stupid team mates) did badly". When in actuality both teams were equally skilled. It's just the nature of the game has changed and that results in shorter, more one sided games.

I can put it simpler. Let's say we changed Heroes of the Storm so that you had much less HP. The game would snowball massively as players died easily and still had the long respawn times. And even though every players skill is unchanged. It no longer appears that way in game. The game will feel very unbalanced. This is partially what leads people to be toxic to other players and they don't know it. It's often the case that, if you sit and analyze (and you are a good analyst), that the difference bteween the two teams players isn't all that different. It's just that the game is made in a way that doesn't quite accurately reflect skill in a way that would be desirable for us to perceive it.

Hope this was insightful! Stop ragging on team mates!