Couple things: 1. The normal fork is lower. He has a ton more leverage that he puts all his weight into and bounces on, the lefty that is at his chest. When he's twisting, there isn't even body weight on the wheel. 2. That lefty has what, 80mm of travel? The fork their comparing it to looks like a long travel (for a 32mm) 32mm fork. I'd love to see them try this gimmick with a 150mm lefty (does that even exist?) Or a 32mm fork dropped to 80mm with plenty of bushing overlap. 3. Any demo put on by a company who has their own money at stake should be taken with several truck loads worth of salt. These guys are no different than the slide of hand a door to door knife salesmen uses.