I always thought that Hot Toys were capable of doing incredibly realistic portraits but always being told by licensors to tone down or de-age or to beautify before releasing them.
I used to follow JC Hong and his test paintings on prototype portraits were phenomenal, even thinking back to Suicide Squad Joker (Leto), the paint and texture detailing was fantastic, which still translated pretty well to the mass market.
But then so many releases lost the sharpness, accuracy, or details - so my assumption was actors or the companies licensing them were interfering.
Now portraits like Anakin and this Joker coming out (Joker obviously being a custom), and it goes to show that actually no, what with other studios and custom artists, the ability to produce greatly detailed and accurate sculpts was neither due to technological inability or licensing issues (although I'm sure some portraits were affected by this one). Nope, turns out Hot Toys just didn't really care that much or, in addition to, couldn't due to artistic skill.
Happy that new artists are emerging who can do better.