Maybe it depends on what you are calling a cartwheel. It looks to me like one wing went into the ground causing the other wing to come up high as it spun around relatively flat.

Also in that video and the other one I saw(that might be the same one) you can clearly see the point at which the aircraft stalled(watch for the point where the tail went low.) It appears that he was on proper glidepath to make the runway threshold, but then went down abruptly. Even if he had made the illegal DISPLACED threshold, it would have been a bad landing, but one that everyone would have walked away from.

The tiniest bit more speed would have made all the difference. In learning to land an airplane, probably the most common phrase heard over and over from instructors is "watch your airspeed." Once you have enough landings under your belt, you can land without watching the airspeed, by watching your pitch attitude instead. At one point, my instructor got in the plane with a towel and covered the panel with it and made me shoot a few landings. If I were to get into a different type, I would have to get some practice landings before I would have the proper pitch attitude etched in my brain well enough to land without an ASI.

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2001 SLK 320 six speed manual
2014 Porsche Cayenne six speed manual

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