I see the argument but honestly, I'm not buying it. It's a valiant attempt to portray this information (a differential) through animation, but it's too noisy and chaotic, particularly when more than a few of the items need to reposition themselves. It looks nice but at least from the demos on that page I don't feel like it's really helping increase the information density of the data being presented.

At the end of the day, I think it's polish that for almost all cases the user will be better served if the animation were to be turned off since it is a waste of time. It is very cool though!