Ok I've had some communication with this fellow.
He uses "Mobius", a free looping program. The program is a software attempt to directly emulate the functions of the "echoplex plus", a rack-mounted looper unit.
The good news is that as a looping tool, its an extremely powerful program, so flexible. That flexibility makes it somewhat difficult to setup however - especially for hands free use.
After downloading mobius and spending a few days melting my brain getting it going, I am able to make a conclusion.
I'm not posting to contradict anyone here, no, its more about acknowledgement. Although I can't prove it, I would bet my fantom that this is NOT mimed in any way, and it IS done real time, with the looper.
Everything in the track can be seen laid down. Watch carefully

What we are seeing here is genius at work... IMO.
Even if it wasn't such a great track (which it is, but thats not relevant) this is a feat in the use of music technology. Although looping has been around for years, this shows some of the potential of more modern looping techniques. And what a potential! It may be a while off yet, but I can see this type of live performing becoming more mainstream.
As i posted before, THANKYOU for showing me this, I'm now a loop addict
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youtube.com/Johnnykeys1978
(no looping videos up........ yet........)