The debate between controller and keyboard/mouse operations has been a longstanding issue in the gaming industry. While many games support both inputs, some games are divided into two separate versions due to the differences between the two.
Fps games, for instance, are generally easier to play with a keyboard/mouse setup, making it unfair for gamers who use controllers to compete against those who use keyboards and mice. As a result, some fps games have been split into two separate versions, one for keyboard/mouse players and another for controller players.
Games like Apex Legends, however, are less concerned about this issue and have introduced cross-platform play functionality. This means that players who use controllers on their consoles can compete against players who use keyboards and mice on their PCs, but with a caveat: the controller players receive a 0.6 aiming assist, which can be unfair in large part. Many professional players have taken to using controllers in competitive play as a result.
The choice of controller or keyboard/mouse operation also affects the selection of guns in some games. Because controllers have aiming assist, guns like submachine guns are more effective at close range. On the other hand, keyboards and mice are better suited to shotguns, which excel at close range.
Similarly, games like Samurai Extinction (note: I translated '武士零' to 'Samurai Extinction', may not be the perfect translation) have a similar scenario, where most speedrunners use keyboards and mice. The difference in control precision between the two inputs affects the player's strategy and gameplay experience.