Interesting video, good find!

Would be interesting to do the same angle test in CoD to find out which side has the advantage, left vs right, to know which side of a door or opening we should be setting up on to give ourselfs the best advantage.

One thing I will mention is that in CoD the camera does a weird thing where if you are moving around the corner and the other player is stationary you will actually see them first due to lag and refresh rates when playing online. For hardcore modes it's not that important as most of the time the game is played at a much slower pace but good to know when running around in core.