I have both and can say it is just as skinny but is a bit harder/less creamy which works great for brows because it means you can really control the pressure and really feather in hairs and really thin lines much easier than the brow wiz. I find lines drawn with it actually come out thinner than the brow wiz because of that.

I got this in 02 dark brown and my anastasia brow wiz is in medium brown and I have dark, standard natural asian Brown-black hair for reference.