I've answered a lot of your questions in the PM, tell me if there's anything else.
Affected by FOV means that the 360 distance changes when you change FOV. If you are matching 360 distance when calculating for a game that is not affected, changing FOV will not change the output. But if you are using monitor distance of viewspeed, changing FOV will change the output in most cases regardless. This is because these methods use FOV as a part of the calculation.