It's interesting how the focal point and field of view is totally different between the two cameras. Also, I've never been a big fan of the downward angle of the tello camera - this is so camera drone and not FPV - irritates the @#$% outta me. In fast mode the camera is really crap with the extra downward angle making it impossible to see where you're going if your not a minimum of 15m in the air. MY CF frame mod will see to that!
Also I think he is using the DVR of the runcam to get such good video quality.