I think Cab is just being super conservative with their numbers. I would say the numbers they post are good for beginners and entry level riders. Maybe they want to err on the side of caution. A 12m kite in 25mph can be a lethal weapon. It takes a few years of riding to safely control that amount of power IMO.
We all learn what numbers work for ourselves eventually, why not start out on the low end?
Exactly - I think Cab put the "right" and sane numbers out IMO.
If somebody then wants to take it to the limit, or over, is another thing.
Wind charts that says a given kitesize can cover from "5 to 25 knots" are pretty useless.
Eventhough it could be true, if using the best riders, and going on hydrofoilboards and down to small TwinTips (and maybe even different weights too, if not written it is average weight).
It is still useless
Wind range charts are only a very very rough estimate - and you can not compare between brands thats for sure, and within the same brand, it is just a rough thumb rule nothing but
The problem is, that experienced riders never ever look at these charts of course (only for having a laugh sometimes) - but they dont need this help so no problem.
And the less experienced, or very naive, who really need help regarding wind and sizes, or when building a quiver - they look at these wind range charts and gets fooled (or not in rare cases)
It is a lose-lose this way, if the ranges are too wide.
If too narrow, everybody is happy and safe !
(except the PR of a brand who wants theirs to be superior with the double windrange of all other brands of course, ha haa