Some games do have different matchmaking based on control type. The problem is some people use devices that let them use a KBM while pretending its a controller

Some games do have different matchmaking based on control type. The problem is some people use devices that let them use a KBM while pretending its a controller. While maybe some people use it to play some game that doesn't support KBM on console, there's definitely people that use them to get a leg up. KBM is a huge boost.