https://battlelog.battlefield.com/bf4/battlereport/show/1/1752110488144208576/902150639/

https://bf4cheatreport.com/?pid=&uid=d4mi353&cnt=&startdate=

If you just investigate his battlelog match history from the begining,(he has less then 20 matches) you can clearly see that his kda, and also accuracy increases enormously.