How does Jean Jacques Machado Win single handily?

This guy is a good grappler but basicly with one hand. Wont that be too hard for him to do BJJ. What an insperation to people everywhere. But will it change the way BJJ is taught? Think about it if you could grapple with on hand good then you could do twice better with two! Do you think Jean would be better with two hands or did his disability gave him the determination to be a great fighter?