Sudden spike in accuracy and kdr. They have gone from 10% to 24-5% over the course of around 4 hours, and from 0.9 to 2.4 in the same time.

There is also their 40% HSKR with the Scar-H.

I have a little footage, which I believe shows walls in the first clip (where he looks right at the guy before he comes around the corner at 0:06 seconds) and what looks like an aimlock at 0:17-19 seconds.

https://www.youtube.com/watch?v=bRyQonULz9U

It's all little things, but I think they add up pretty clearly.

Just quick follow up:

http://battlelog.battlefield.com/bf4/battlereport/show/1/914050687228733184/1122251278/

37 Kills | 21 HS

http://battlelog.battlefield.com/bf4/battlereport/show/1/912307539841972032/1122251278/

26 Kills | 15 HS

http://battlelog.battlefield.com/bf4/battlereport/show/1/912300475384133440/1122251278/

27 Kills | 18 HS

They have some pretty impressive HS accuracy.