The onboard shots from behind the rider look very similar afaict. Old style quick shifters gave the rider a jolt as the next gear engaged. Something that makes me wince through mechanical sympathy as, if it was my bike, as the gear box would be breaked in 6 months, so I'd retard the shifter timing to give a smoother change. But they get a new engine sooner so who cares.
With this the rider still gets a jolt from what I can see as the taller gear engages. The difference is, the dogs are slid in to the next taller " floating"(?) gear while the drive gear is still engaged. The taller gear takes up the slack, as its taller, and away you go. The jolt is transferred between the gears on a flat surface full on, rather than the old way of angled dogs pulling themselves together meaning the point of the dog wares on the corner with all that drive on such a small area. The slightest ware on those corners/tips of the dogs can give a lot of sift problems on a traditional bike gear box, meaning the gears don't pull themselves together, and no next gear... WAAAAAABABABAB