Gordon wrote a reply to that test, stating that it was a different reg they were using to the one in the tests, and it was the first stage, not the second stage that failed.
I don't remember where I read it, and couldn't be bothered looking for it at the moment, but its out there.
Having said that, the first thing I did when I bought my unit was to follow the directions from the library here on Rebreather World to replace the paragon with an Oceanic Omega.
I took the regulator to dive lab & showed it to them. It sure looked like the reg they tested to them. You cannot make a crappy 2nd stage good by hooking it up to a good apex 1st stage, Apex are great regs but they are not magic. The Paragon breaths like a pig, is temperamental & leaks water like a sieve if breathed hard. Other than that it is a fine reg.