As I said, it´s a matter of preferences...
Kitana does look better this time around, but not for the quantity of fabric, it´s because of the details, armor, materials, textures, and specially her hairstyle...
However I always loved her stripper outfits (well except for her mk9 alternate) and she became my fave with that kind of clothing....
As for Sonya, I really loved her Mk4 outfit, where she showed her stomach, I mean, I don´t want the outfit to be neccesarily of a stripper, but, it must be sexy, and must show some skin if the girl is hot.. (That´s why Ashra´s suit was perfect, because she´s not sexy).
Sonya´s outfit must resemble her past outfits, and, at least should show a decent amount of skin... And for Kitana, I´m not pleased by the lower half... the lack of heels and that thing at the waist aren´t the sexiest clothes of the world...