I think Vision can enjoy a little latitude in the likeness department, because there is a whole lot of design work obscuring it.
The biggest problem I see with it is the face
shape, which on the statue is more oval, where Bettany is longer and more narrow.
That's why this IS Viz looks 90% fine to me from the sides, 70-80% in 3/4 , then comes up far shorter in full face/head on view.
Oddly,in the still frame for the vid Shoo posted, that full face shot shows a decent likeness to me. In the actual vid, not so much.
At $1K+ these do have to be perfect, and I'm not seeing perfection with the Wanda either.
The expression is blank, Hot Toys zombie-like, and the hair frames the head (on the crown especially) awkwardly, and drags the overall likeness down for me.
For one thing, every image I've seen of her in costume, the hair falls in front, not swept back behind the shoulders.
Here's how the hair masses reduce to basic shapes (the Hot Toys uses a triangular composition also).
You change the circle to a square on the live action shot and it's still closer than using a triangle.