Off the top of my head I can't really come up with the best example of a haired sculpt that HT have done. Frankly I am probably the wrong collector to discuss that subject with because I typically prefer sculpted hair. I would agree with you that I don't recall seeing a HT sculpt with rooted hair/beard looking this good. The Gandalf sculpt does appear to suffer a bit from the same issue as the earlier HT DX eye systems though.
Hot Toys has recently been going backwards a bit as a company in my opinion but they have done some truly remarkable stuff and frankly have revolutionized hyper realistic head sculpts and the entire high end toy industry over the years. They have made some amazing stuff: 1/6 scale vehicles like the DeLorean, diecast Iron Man figures with absolutely insane detail, figures once thought to be impossible like a Chewbacca with fur, etc etc, and generally speaking even their figures that are misses are better than other toy companies best work 90% of the time.
All this being said, I take nothing away from this Gandalf as it looks like an excellent figure. I just don't think it's fair to make comments suggesting that HT has been dethroned on the basis of one figure that mind you almost nobody has in hand. If you want to compare Asmus to HT they better do stuff like this consistently and start doing other things like creatures and dios on a grand scale.