It's hard these days to find a genuine review or even one that fits in with your riding style or personal views. I briefly check over a few sites, including the one you have listed, as well as kiteforum, nwkite, the uk kiteforum, best forum , a few others as well as here of course.

They are all generally aligned to a brand however and against one or two others. Then throw in the shops, reps and teamriders with no integrity and it makes for a bit of a mess. Best to try the gear yourself and/or talk to anyone you know if they have tried it or heard about it.
There are some genuine reviewers out there though, also form shops and brands.