i would bother with the artical, because it has clear flows in the test.
i'm not saying the turbo tested isn't better, just not as good as its was said to be.
i know as i had a similar turbo they tested, on a similar engine spec,
The power and torque is about correct, but not the way both turbo's are said to come in.
have a look here.
https://passionford.com/forum/viewto...asc&highlight=