All of which is a long way of saying that he runs very slowly, his wings are very small, and they flap very slowly. The first couple seconds of him after take off our patently absurd; you need to be applying - somehow - hundreds of pounds of force to the air to push you off the ground. Yes, fine, he has a wonderful wing design and some amazing motors and (apparently) zero weight batteries. Fantastic! But none of the components in that video are producing hundreds of pounds of force. (A commenter at Wired estimates that the servo motors are theoretically applying enough force to pick up a two ton load, in fraction of a second. If we had this tech, we could fly, although that wing design probably couldn't. We could also make Iron Man-style powered armour. Unfortunately, we don't have this tech.) The whole thing is multiple orders of magnitude off from the realm of "remotely possible".
There are just so many red flags. The bizarre edits, the poor filming, the ridiculous design of the wing, the secrecy, the way nobody in the video acts right, the way the wing magically changes designs in different shots, the fact that the wing is clearly not fully loaded, the weird clothing and gear choices, etc., etc., etc. Wired has been hoaxed hard.
The wing surface (that kite he mentions sacrificing) is from one of these ( http://ride.slingshotsports.com/2012-Fuel# ) which is intended for exactly this sort of thing--supporting a human in flight.
Note that in the design blog the motors are being run through a 25:1 planetary gear. The family of motors in question can put out in excess of 2kw ( http://www.hobbyking.com/hobbyking/store/__17986__Turnigy_Ro... or http://hobbyking.com/hobbyking/store/uh_viewItem.asp?idProdu... ). So, no, the power plant is quite capable.
Mind you, 2000w does sound low. The Festo SmartBird weighs less than 500g, and uses around 25w to fly. If you scale it up linearly, that says 2000w would be enough for 40kg, which is less than half what we need. But the Festo SmartBird is a vastly more sophisticated design, and among other things actually flaps its wings in a way which generates lift, unlike this guys design. (Very useful, that.) It's going to be much more efficient than this wing design, so we're actually looking at a much larger power deficit.
Incidentally, the Festo SmartBird is a pretty amazing project; anyone who found this wing design interesting would probably be interested in it. Check out this writeup with a brief video of the bird in flight or this much longer video of the design process.
The second link, in particular, underscores just how impossible the idea of some guy on his own throwing together some wings and managing to fly is. Bird flight is an amazingly hard problem to solve, even for a bird sized model.
More usefully, I don't mind if this turns out to be a fake--but this off-the-cuff "no it is not possible ever" is so narrowminded when not combined with credible facts and analysis.
If you just flap and up and down you move up and down, but you don't fly. You need motion to cause forward acceleration, not just up and down bobbing.
Fake, it's simply impossible for the shown flapping method to cause him to fly.
See here: http://www.youtube.com/watch?v=PSikfcJezy4#t=180s and notice how the bird folds the wings as it pulls them up, then spreads them as it pushes down. The folded wings give less resistance to the air than the spread ones, and that difference lets it fly. Without that you can't fly by flapping. To move forward it also has a front back motion that is harder to see in the video, but is still visible.
This video is very fake.
There is a Dutch news clipping from about a week after video 13 that shows the dude without the patch, which is puzzling. Again, easily explained as using an old photo from before 13, but still.
If we now switch to this mindset, the engineering and tools that we have today should allow us to achieve the desired goal.
So thanks for the hoax, Flying Dutchman - you have started something new here, and your name will not be remembered by what you did, but rather by what you did not and how others used your idea to achieve it.