Another factor which I consider important in choosing your camera especially in sports photography or racing or animals for example or any other motion photography …

This factor is the frame/second.

A frame/second is how many pictures could be captured in a second.

In such cases of photography types mentioned above you need to shoot continuous shots to catch the scene, so as many frames is there in a second that would be better.

Maybe this factor is not that important in other types of photography and will not need to look for it with concern in the camera you choose.

The below figure shows the scene in a second and how many frames could be taken which helps in catching the full image.