It looks like the guy was trying to give it a test spin and broke his thumb!
I've been checking into the Scorpion outrunners too. The Axi 4130/20 has more torque than the Scorpion 4025 series. 1mm larger stator and the stator is 5mm longer.
However, there is talk about a 4035 series in the future for Scorpion. That would beat the Axi 4030's as long as it's about the same length.