Dooms day is coming

There’s a whoooole wall of text explaining the fundamentals of rating systems and matchmaking systems, as well as a report covering other basics and more detailed jargon.

https://www.microsoft.com/en-us/research/wp-content/uploads/2006/10/Game-Developer-Feature-Article-Graepel-Herbrich.pdf

You don’t need to try to obfuscate it with your platitudes and meaningless speculations.

Check out his reports too. (i.e. Mark Glickman’s)