The YouTube video Ponder posted, had this graph which pretty much sums up the discussion,
View attachment 412410
To snip this piece,
http://www.tweakguides.com/Graphics_5.html
This is being picky as it comes down to milliseconds, and I believe that this was mentioned in the video and by me somewhere in this thread that every ‘winnable’ millisecond counts. Not only do you need more and more FPS, but you need to retain it consistently as high as possible.
A more responsive user experience, the more precise the movements. A monitor does not set this cap, it only displays the most recent updatable picture.
To quote,
and in CSGO the server sets the true cap, the tickrate. Source has a rundown on their multiplayer networking,
https://developer.valvesoftware.com/wiki/Source_Multiplayer_Networking
Taking note that we peons must live with 64 tick MM servers.
All in all, I experience a smoother game the higher my FPS which has contributed to my skill.