Chantal's Japanese 21/0 Stainless Steel

So I picked one of these up at a Ross Department store (west coast TJ Maxx type factory second/buyout retailer)... It had a small 2 inch scratch on exterior which made the price VERY right (80% off MSRP of $120).

I've never before heard of Japanese 21/0 SS before. I was intrigued so I started to research... It didn't turn up much besides links to sellers of Chantal cookware.

The claims - up to and including 30% faster than 18/8 - I can't verify... In my 100% scientifically flawed apples to oranges "boil off" between it and a late 90s era hand-me-down Korean-made disc bottom 6 qt RevereWare Dutch oven... The latter came to a boil 3 minutes faster on an electric coil... But again apples to oranges...

I'm perfectly pleased the purchase though, I wanted an induction compatible 8qt stainless stock pot to replace my warped and chipping enamel on steel pot... This does exactly that just fine...

But I'm curious, what's the deal with the 21/0 SS? Chantal seems to be the only one using/marketing it. What's your opinion, is it worth paying a premium?