No Andy, I don't think it's just like all of them. I'm no expert but regular quads don't use differential thrust to create yaw. They use differential rotation, right? The 2 props rotating one direction will speed up and the 2 going the other direction will slow down, thus rotating the body of the aircraft.
At first I was thinking some sort of differential to allow opposing props to run at different speeds but I wonder if it really might all be done with pitch. Increasing the pitch on clockwise props and decreasing the pitch on counterclockwise props will keep total lift the same but might change the angular forces and cause yaw.
Again, I'm no expert and have no idea if this is how it's being controlled, just my best guess. I look forward to seeing a reply from someone who knows how this aircraft is set up.
Dave