Im curious with how the link was determined as well. After comparing the two accounts side by side, its more than obvious they are the same player.

Picture for reference. Red is Accuracy, Orange is Headshots 

Glad to see you doing your research on him too Micas. I took a look at his stat history Graph on fairplay and you can see a jump in his accuracy and his h/s percentage drop at the same rate. its not natural and to me suggest him using some sort of 3rd party software to hold him on body shots, maybe to look less suspicious?