You're so wrong on so many levels. Noone besides people who have no clue use a controller on PC. K&M players trash over controller players SO MUCH
mouse aim > aim assist
I know that this doesn't count for regular players but every average fps player on PC will trash a controller person all day. Pro level is another discussion.
have you ever played Halo? HALO is not like any other FPS (except Destiny 2 I guess). saying a mouse player would shit all over a controller player in Halo demonstrates only 1 thing, ignorance towards the topic.
Halo gives controller players such a huge advantage it's not even close. again, the people who wanted split matchmaking that keeps Mouse players and Controller players separate were the MOUSE PLAYERS not the controller players. and the reason why is because they literally could not play properly because controller players shit all over them.
I play MCC regularly and every time 1 team is in the unfortunate position to have 2 or more M&K players on their side, they lose... there is no challenge. A mouse player will get shit on in Halo. the Aim assist in Halo is so aggressive it literally plays completely different from any other shooter out there (except Destiny... because, that's literally running on the same engine and uses almost the same aiming mechanics)
just as an example, I'll post a screenshot to explain how it works (I didn't have someone to demonstrate it with so this rock has to do)
in this screenshot you can clearly see how I aim above the rock. let's imagine this is an enemy player for a moment.
if this was an enemy player, I would now have a so called "red reticle" because the outer edge of my crosshairs/reticle touches the tip of the rock, which would of course be the enemy's head. Red Reticle in Halo is a mechanic that is not only intrinsic to the way you aim on Controller but also to the balancing of weapons on controller.
as soon as you are in red reticle distance (as in you are close enough for the weapon you use and you have your reticle close enough on your enemy's hitbox) the game not only has extreme aim assist but also extreme amounts of Bullet Magnetism. Bullet Magnetism is when the bullets literally bend their flight path to lock onto your enemy's hitbox.
if that tip of that rock in the image was the tip of the head of an enemy player, on a controller I would easily headshot him by aiming exactly like I do here. on a mouse on the other hand, I would need to literally aim the exact center of my reticle onto the enemy's head in order to register a hit.
this gets really bad in motion when the extremely strong aim assist basically soft-locks to your enemy AND the bullet magnetism does bend the trajectory of your bullets ontop of that. so not only does the game help you aim to a ridiculous amount, it also lets you hit your target even tho you aim above or to the side of it to a degree where your reticle's outer edge barely touches the player's hitbox.
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anyone who says Mouse and Keyboard players have an advantage in Halo over controller players is talking out of their ass, sorry. you are the one who has no clue. When MCC first launched on PC there was a shitstorm because of how broken Controller vs Mouse was, and still is,.like I said, if the other team has more mouse and keyboard players than yours you are bound to win the match. and there aren't enough Mouse and Keyboard players to begin with so mouse and keyboard players will always end up in lobbies dominated by controller players even after they specifically introduced a mechanic to lock you to a certain input method and attempt to match you with it.