Well, I'm not in the business so I can speculate and say some things that maybe Johnone feels an obligation not to. It looks like we are going to get neither confirmation nor denial, and that's just the way it goes some times.
Since FN/Browning owns the rights to the Hi-Power, if they say it is a genuine Hi-Power, it is. It doesn't matter if they make it in on an FN production line at Herstal in Belgium or have it assembled at an FN-owned factory in Portugal or they have it made for them in a factory belonging to another company such as FEG in Hungary and don't ever tell where it was made. The ones that FN says are FN or Browning Hi-Powers, are.
If FEG or Norinco make any without permission from FN, or if an FN employee sneaks a set of parts out to assemble at home or sneaks into the factory and makes one out of hours, their product isn't in the legal sense, a genuine or "real" Hi-Power, even if it is a perfect copy.
Ultimately a thing is worth whatever the buyer and seller agree it is worth. If I needed a pistol I'd use FEG or Norinco copy of an FN Browning or anything else if that was all that was available. As it's a discretionary purchase for recreation, I won't knowingly pay as much for them as I would for a Browning, even if it was demonstrated to my satisfaction that they were built to the same specifications and standards. But if I eventually buy a Browning with proper Browning stamps and an FN serial number and I never discover it was manufactured to FN's specs at FN's behest in another company's factory in Hungary or elsewhere, I suppose ignorance is bliss.