CoD
Well I have had "discussions" with fans of the series, they claim to be the elite of FPS players.
I have heard them cry with sadness, was a long time ago in PS3 era. My favourite PS3 MP game was Killzone 3, I was actually good at it, good like top 0.5% good.
It is a slow game, cannot win by charging around, need to use tactics. Many players were older gamers as slow movement = time to plan. (High gravity world)
One weekend PSN offered the MP only as a freebie. MP only version played with the full version, and of course we knew it all because we had beaten the campaign on hardest difficulty, then played MP for about a year. All that bravado disappears when the CoD masters get totally wiped, I remember going 36:0 and 31:1 or 2.
And I was using motion controls! Lots of us did, aiming was so accurate and fast, point and shoot. The 31:1 or 2 was only a death because I ran out of ammo (playing Marksman with VC32 & STA52). I still had a 30 streak. The 36 was because fully upleveled Tactician in an LS209 Exoskeleton against unleveled.
FPS skills do not carry across games with different controls and movements. But I enjoyed upsetting the CoD "masterrace"