Why is mixtape matchmaking so scuffed?

For context, my group mostly plays mixtape as we like the game but not so much the downtime during battle royale game modes. I play on a low-end gaming laptop as my xbox one and previous laptop died around the same time, so it just seemed like the right choice to combine them into one device. I don't like playing on mouse and keyboard so I still use my xbox controller, and yet even with every one in the party on controller we get placed against mouse and keyboard players because I can't afford both a laptop and a new gen console. 

I honestly don't have much of a problem with the aiming differences between the two input methods, but the movement difference is crazy. We regularly go against octane's hopping and tap strafing from side to side at full speed whilst shooting us, which is almost impossible to aim at reliably. We shouldn't even be matched up with these people but because the mixtape matchmaking is based off your damage instead of mmr you can play a few games against people your skill level and do alright and still seem to be matched with people way better than you who were doing similar damage in their much higher skilled lobby. On top of this, we have seen some of these skilled movement players just roam around the map and not shoot anyone after a certain point, presumably to lower their damage rating so their future matches are against an easier pool of players.

If normal mmr based matchmaking won't fix the problem and will just increase queue times, then maybe input based matchmaking is the answer instead of console based? The only reasons I can think of to not do this is that the small number of people using controller on PC aren't worth the effort, or maybe input detection can be easily bypassed. Strong input detection should already be an anti-cheat priority as it prevents people using controller aim assist with mouse and keyboard hardware. Hearing my party complain about PC lobbies every session has stopped being funny so I would appreciate any effort at all really.