Although there can be cheating, it is most often in the form of botting.
In this case I’m afrain you are incorrect, Eddie. The first two times he is clearly jumping over his cannon tower. (Well the second time might be the wall). And the third time he is jumping over the corner of the bushy terrain. It’s just barely getting over the corner, but that is enough.
As to your second question, your video is from watching a replay. In replays you can zoom the camera out more than in game since you are only watching and not playing. That does not indicate that is how he saw the game live. See “Z” and “Shift-Z” Extensive Replay Hotkey Guide
Hope that clears things up!