You don't need any precise tools to see how off the HT sculpt is. Look man, if the HT sculpt would really top the ML sculpt, then why do so many others have issues with it?
Also, it's "measurements" not muesurment". Btw do you have pics of that lifecast? The fact that you used calipers is pointless, like you said, you don't know the lense type/mm they used in the shot. So not sure why you decide to put so much merit behind it.
Also, I am sure you are completely right and that I am wrong. Even though I have spent years sculpting from multiple reference photos, have worked on VFX for films and games, and sculpt in both 3D and with real clay, none of that matters...thanks for the eye opener. This HT piece is, in fact, an optical illusion. It's so good that it looks bad...like a really extreme version of the uncanny valley.
I am glad you love it

It's authentic
I'm not sure what you think a life cast is or how it works..or if u just don't know. But it's not a photo. So your comment about a lens is silly. It is an actual 3d cast from an actual mold used on Hugh's actual face. There's no guess work. It's obvious you where using the "eye" test based on a photo, and not actually using any measurements. And thanks for spellchecking for me, btw. That really makes a huge..wait no it real makes zero impact. I'm sure you use perfect grammar and spelling and no short hand or mistakes when you are typing on a forum(and texting and any other time). Petty. Anyway...
You say you sculpt, but I'm not sure. If you do it's obviously not reproductive sculpting. The only way to accurately reproduce anything, a face included, is by checking that the dimensions exactly match the original. Be it a straight line, a car, a house, or a person. Think about it. If I wanted to sculpt a 1:6 scale Ford Mustang how would u do it? Eye ball it, or go get exact figures from an exact car? Then if I wanted to compare two sculpts of that same car how would you do it, objectively? By checking the numbers. Like wheelbase and bumper length, and height, and camber and two hundred other things. Now if one of those got 6 percent match and one got a 90 percent match which one is more accurate? Even if you happen to like the 6% match better because you just like it better, does not mean it's a more accurate reproduction of the original.
Well when compared to a lifecast...a cast taken out of a mold that was made of Hugh Jackmans actual real life face...the modern life sculpt is closer on a total of 2 out of 30 data points. And even those 2 where not spot on. It has an exact 1:6 match of Hugh Jackmans real life face on 0 out of 30 data points. The hot toys is closer on 28/30 data points and dead on on 21/30 data points. So no, neither one is a perfect match. But the Hot toys sculpt is massively more accurate. Sculpting something from imagination or using your "style" is something I am not good at. But replicate a subject, be that a person or object, that's the kind of sculpting I do.
Again, I'm not saying anything about which version you like better. That's opinion and taste based. But accuracy, that's what I'm addressing. And that's where the ML sculpt fails. It still is a great sculpt.
As for your sculpting...I've been at it as long. And worked on some of the xmen films. With Hugh.
I've been around sculpting my whole life. My father is a sculpter. Been in the industry for 38 years. My first memory involves sculpting. I've also worked on visual effects, and computer sculpting. Everything from zbrush to Cad. I've sculpted in the real world with clay, wax, foam, rock, wood and metal.