Player 784570816 appears to be using auto aim, check out the video I recorded because in one match he had done a lot of headshots...see the video!!
https://youtu.be/gSDH_GQk_EY
https://battlelog.battlefield.com/bf4/pt/soldier/784570816/stats/338538801/pc/
https://battlelog.battlefield.com/bf4/pt/battlereport/show/1/1437438084690736768/1004788981007/
https://bf4db.com/player/338538801
Click on the REPORT button on his profile.