I got a QM game against a player with a rating about 640 on that template, I myself have only a rating about 38 on that template.
I think this game was no fun for both of us, I always thought one get an opponent with almost same rating but not one with more than 15 times higher rating?

In RT QM, it is often like this-as the matching is based on who is currently available for that template and in MD games you get nearby rated opponents. Though rating isn't representing skill, it does represent experience.

Okay, but 38 versus 640 is way to much imo.

Meh in rt it kinda has to do it like this.

Either it makes matches as much as possible giving you potentially tougher opponents, or you're waiting forever.

Ratings in QM are based mainly on number of won games, which says more about player's dedication rather than skill. It matters much less than you think.

Rating doesn't have much to do with skill, especially with a low rating. To me, a low rating just means you haven't played much qm yet.

But if I have a rating, I could match up more equal players, I would rather wait longer and get nice games, so it is boring for both sides!

Also, since it's named Quickmatch, it better give you a real-time game quickly when you look for it, no matter the rating of the other person. Quickmatch isn't intended to be a ladder, it's intended to give you a game quickly. The algorithm for Multi-day gets matchups in a smaller interval around your rating iirc.

I wonder, why is then a rating involved when there's no use for it ?

how is there no use for it? it might be more representing how much time someone puts in the game. but someone without any skill can only go so far. without any rating you might find even more boring matches so saying "there is no use for it" is ridiculous.

This isnt saying however that i like the way the rating works. Just saying this rating is better than no rating.

I wonder, why is then a rating involved when there's no use for it ?

Ratings inflate egos. That's a use right there.

one other note here:

Why would playing a significantly better player (I am not even talking rating here, they could be rated lower than you, as others have noted QM rating to a certain degree is about having too much free time) be a bad thing?

Even if you get pummeled in 2 turns?

You just had the opportunity to see how a better player picks, deploys, predicts, etc.
Learn from it.

This is a constant annoyance for me on the QM games, since I have a relatively high (inflated) rating, many low rated opponents just forfeit, which further inflates my already inflated rating. It doesn't do them any good. PLAY THE GAME! If you win great! If not, watch the history and learn something.

Listen to the wise old bird, kiddos.

QM ratings tries to match you with the closest available person to your rating, which is why it has this rating system. There's also several factors to who you can match against.

Do you have the same templates checked? Who's online at the moment? Who else is playing QM that might be taking other opponents away from you.

I agree playing bad players is annoying, but for a rt setting, it's the best way to go.