“They stretch the same, some may even prove it stretches more. However it is more dense so it does transfer vibrations better than mono. Google “2nd annual line stretch test”
I’ve heard this as well didn’t know if it was true or not. Talk about false advertising wow! They’ve also done abrasion tests with mono vs fluorocarbon and the mono won every time even with thinner line. Fluorocarbon isn’t all it’s cracked up to be imo it’s only good for one thing and that’s invisibility and I’m not even sure that’s what they claim and makes any difference compared to mono. I know plenty of guys that use mono leaders for line shy fish like trout and walleye in clear water and have no trouble getting bit I can tell you that.
I’m surprised no one has any intel on those Limit Creek rods they seem like the real deal.