There are a few things missing from their test.
They need to put some load on the turbo through inlet and outlet simulation.
1) They need to put the compressor housing on the unit.
2) They need to create back pressure to their claim of 6 to 8 psi intake manifold pressure.
Now they can measure the turbos shaft speed. Doing these two things will drop the shaft speed drastically.
Then after that it would be wise to tell us how much their turbos flow in lbs/min.
But they kinda already told us this is not even close to what a exhaust turbo can produce in the way of power. A meth/h2o injection kit will not help alone if the turbo flows anywhere close to what an exhaust turbo would. You will need to run bigger injectors also, even at only 6 psi.
Most Hondas today you can have a complete turbo kit with management for around $1500.00
On my sons car were only in it $1000.00
I wrote them to see how many lbs/min they flow. I will let you guys know as soon as I get a response.
EDIT My Bad
OK after reading more of their details I found that they do claim at a 20% decrease under load, but their not saying how much load? Plus I found they are claiming you should run larger injectors for max performance.
The main thing is how much do they flow in lbs/min. This can be used to compare apples to apples.