In my opinion, he is in a no-win situation. Even with today's computerized technology, there is no way to have a pure level playing field. What I don't think some people may realize is that the technology he is using - has been experimented with considerably. While side mobility is limited, straight running speed can be increased by a considerable amount. Now, at what point is the actual running on a truly matched level? One tweak on the computer and the same guy can up his speed by 1 MPH. Two tweaks and 2 mph. Then were do you stop?
This guy's prosthesis has been adjusted to give him normal olympic perameter speeds, with his body work out. The problem is where do you stop tweaking the prosthesis in relation to the person's ability.
It is not fair to him, but it is not fair to others either who can not have their own muscles tweaked. Would it be OK to have springs in their shoes? A no win situation.