Real hard time making sense of this.... You will need to provide photos.
Sorry My Ingles is not that good, plus I'm ultra dyslexia too
For examples most other commercial baskets use Four longitudinal tubes..
two at the edge/rim (top) two at the bottom closer to the center line holding all the smaller curved tubes dimensionally stable (Most baskets had the roof rack mounts hardware attach to the small (multiple) tubes.. (the Rola has some at the bottom edge of the basket but they are very "Malleable" and the are about 38-39 inches apart)
In terms of manufacturing this presents many challenge because four big diameter tubes are far more complex to keep alight specially after welding..
I post pictures of mine when I'm done with the painting..
Probably not a good idea to compare a $450 basket to a $120....obviously there's differences...
Also, most baskets are similar size and will fit your roof rails fine.
Sorry you are right not a far fight, I did used it as a example because I spend $360 on the three racks, a few hours of grinding, bending, machining, welding and paint prepping, so I pass the $500 mark, then again I end up with two baskets..
As a Designer I totally love the shapes of the Kuat (all their stuff is top notch awesome, but so, so expensive).
As a person that Make Stuff, I understand the nightmare that is to custom bend so many different tubes (The contour to the main tubes for added basket space, but the difference is infimal) not to mention even reach them when you are welding them.
As a Pragmatic person, I think they when to far and most people don't understand the minute details and features they offer and they build them self out of the price point.
Notice how they use Four main big tubes and then two 1/2' to aviod any kind of deviation.
You see even the guys that sell them for a living (I can not even find pictures of customers using them) had no freaking clue about airflow dynamics and a rack mount it like that will drop fuel efficiency a good 5-7%, (The air will be force fed in between the rack and the roof) max wind too, just don't open your sunroof specially when eating popcorn
Just look at the back of it, it will let you open the rear door even with a spoiler, zero issues, So sexy, but not almost $500 sexy at least in my opinion and budget)
Then again regardless all baskets by definitions generate turbulent airflow on the roof of the vehicle, especially if you count the gad in between the roof of the car and the rails of the basket..
Very complex subject and for sure I'm not a subsonic airflow engineer..