1. It was a glimpse and in the whole movie with the exception of that scene she looked like Jesse didn't supply her enough meth.
2. Scarlett has far better(maybe its too much considering her opponent has no curves) curves and is better proportional. Witch has tiny legs and arms and is overall a generic woman of her age. She has too standout ears and her face' attractiveness is on the level lower than Meggie Gyllenhaal nowadays. She doesn't look better than Johanson.