Thanks for the link -- interesting read!
Sight unseen, of course, but I am suspecting that there're the usual Gore smokescreen and hyperbole at play.
eVENT passes moisture well at both high and low humidity. Goretex performance, however, is very much affected by temp/humidity levels. Methinks that Goretex simply published the best performance point it could create in its own lab -- and then shout out "GORETEX beat eVENT"!
Here are two more excerpts from the link above:
(1) "Bear in mind though that lab tests don't tell the full story and eVENT says, with some justification, that the way RET testing is conducted puts their material at a disadvantage. Real world testing suggests that this is true, we've found eVENT to be significantly more breathable than XCR and, to underline that, at least one Gore employee has told us that eVENT is roughly on a par with Windstopper, when it comes to breathability."
(2) "What hasn't changed is the basic technology of the membrane. It's still a ptfe layer with a thin smear of hydrophyllic PU on the inside to protect the membrane from contamination."
Sounds to me that Goretex left everything the same -- except for the backing material, which will be woven instead of knitted. The thinner and lighter material should help to hinder the passing of moisture/vapor a bit less -- but to what degree?
I bet when we get the next Gore brochures, it's going to sound like they accomplished something "totally revolutionary"...