The AR 15 does 7/12 damage with an accuracy of 10/12 and has a 2 second reload time.
The AK 47 does 9/12 damage with an accuracy of 6/12 and a 2.5 second reload time.
This is obvious Soviet propaganda in retaliation to the mocking FPS Russia videos some yank made. Obviously an AK can't perform to US standards of manufacture and design. These tests were clearly rigged.