Headshots get a bonus of +1. At some stage, this bonus started getting recorded twice. As a result, some points are higher than they should be.
I'm not going to attempt to fix it until I know it can be done without messing anything else up but just so you know, when/if it's fixed, you'll lose some points.
You can check it on your stats page:
In the 'statistics summary' the count of headshots shows the correct number of total kills, the number in brackets shows the number in the last 21 days. Under 'player actions' the number of headshots should equal that figure. and in your 'player event history' page you can see for each headshot kill
is listed twice, one after the other, instead of only once.I received a points bonus of 1 for triggering "Headshot"