Nah I'd say it's pretty comparable and wouldn't even say it's SIGNIFICANTLY better.
Root job and overall sculpt quality is pretty close to one another when compared. I quite honestly don't even see that big of a difference in paintjob quality and Inarts sculpt is one that is mass produced in some factory in China while Adam Gu's sculpt is a custom painted one.
The only thing that really separates that sculpt (and a lot of these custom sculpts) from Inart's is the teeth and the better done eyes. Although I feel the likeness on that Adam sculpt is a bit weak with the eyes there but the quality of the eye area is very nicely done.
Does Adam's sculpt really look
$8000+ better? Sorry but no it doesn't to me. I agree with what ScoobyDoo said on the previous page where a lot of these customs are actually quite comparable to Inart's, with some even looking worse. Which is a testament to Inart more than anything considering the price of what we're paying compared to a single sculpt. You're comparing custom hand painted small quantity sculpts to one that a company mass produced in quantities of thousands and STILL made them comparable in quality to customs. You sort of reach the area of diminishing returns there for some. Saying they're not comparable isn't quite right.