M/k or controller

I feel it is. Quicker and more precise movements. More hot keys and buttons. If if is competitive it should be controller vs controller or k&m vs K&M. Personally I would rather a controller. Not a fan of play K&M players in unranked matched either. Takes
some of the fun out of it for me.

I use both controller and K/M. It also depends on the game, like if I'm playing a racing game I'll use the controller but if I'm playing a FPS game then I'll use the K/M.

Yes it is but just for some few games and not all games. Fortnite for example is allowing you to play with m&k(mouse and keyboard) but you are getting queued against m&k users, so PC Gamers, PS4 Gamers with m&k and Xbox Gamers with m&k. You can use an
adapter to play with mouse and keyboard on every game. And the console and game are thinking, you are playing with a controller. And even in Fortnite you are having the advantage to get queued against controller players.

No I wouldn't like M&K on xbox. It gives a huge advantage over controller players. The only way I think it should be implemented is if M&K players are matched in a separate lobby than regular controller players

it would be better if all games had M&K support on Xbox, then people could use what they feel comfortable with and no-one would use the adaptors.

if everyone has the same options then it's down to the individual to pick their preference. an adequate M&K is about the same price as a standard controller and you can get a good gaming M&K for the price of an Elite controller.