Actually, I’d say the Kite-X turbine delivers LESS peak power per unit mass than most small turbines, but again, that comparison is not that meaningful anyway, since the Kite-X turbine is designed for max total energy capture in light winds, whereas most small turbines are simpler, but designed for areas with strong winds.
Of course, a turbine designed for light winds will not deliver the same power per unit mass as a turbine designed for a strong wind resource, as most are.
To me, that is what sets Kite-X apart from most other small turbines - good performance in light winds, which most hope to have, but few do, especially at a typical campsite. Nobody wants their tent to blow away!.
I will point out though, that with the added gearing (gears? belt drive?) the complexity and failure points are increased. It might work better to use a larger direct-drive alternator, or one designed for lower RPM, than adding all that weight and complexity. Belt drives for wind turbines is a typical newbie idea that has never gone mainstream, as far as I know. I tried a chain drive years ago, against the advice of wind energy veterans, and found out everything they said was true: more noise, and I don’t remember exactly what went wrong - rust? Whatever it was, I never used a chain drive again.
Anyway, as cool as it is, It does not seem like a very robust design overall, and to me, it looks like it might get ripped apart in a very strong wind.
Also I seem to remember a customer talking about buying new blades - this implies that the blades are not robust, since a turbine designed for occasional use camping etc., should not be getting enough wear to need new blades, and any turbine that has only been around for a few years should not need new blades yet anyway.
Still, it’s a pretty nice effort - at least it works and can be useful for something!