The suit looks marginally better, with the accurate chest plate being the real difference. The ab plates look a little better, as does the way the cape sits on the shoulders. If the final product has the weathering this appears to, that'll be nice. I'd like to know what the cape is made of.
The unmasked head is a little stylized or idealized. I wouldn't say it's better. The Cowled head... Different, but about the same as HT likeness wise.
Probably the thing that will make this figure look more natural than the HT is that the arms hang straight down at the sides--something virtually no HT figure in a costume like this can do, haha.
At the end of the day, I feel the differences are small, but enough that I will roll the dice on the standard version on addition to the HT version. There's nothing about this that's so incredible it has me running off to cancel, though--which I think is to be expected. Aside from material choices and rooted hair, there really isn't much room to improve on HT's offerings in general, so the differences were always going to be small.
We'll see if InArt can actually deliver.