Rosana by Wax
I think that Rosana presents women in a bad way because throughout the whole video the scenes start off looking like 'Rosana' and wax are having sex but in fact they aren't. This could also be the video saying that "just because you assume something, it isn't necessarily true" but because of the artist being somewhat of a 'hipster' I guess not. The entire video is basically centred on the attractive actress or 'Rosana' (seen as an object of desire) and saying that she is "untouchable" and bragging that she is very sexy and they have sex all the time. The camera is constantly focused on 'Rosana' and reinforcing my point that 'Rosana is seen as a object of desire.
Roar by Katy Perry
I think that Roar shows Katy as in an animalistic way and tires to appeal to a male audience in this way. However, maybe the fact that she shouts or roars most of the song and she says she has the eye of a tiger (animalistic i know but also manly and aggressive) might contradict this.
What you have here is good and you have responded well to the question. But there is a distinct lack of detail from the videos to explain your points.
T: What you must do now is develop your points and fully explain them using multiple specific examples. Pick out all of the technical aspects (Mise-en-scene, editing, lyrics etc)