First if your going to reply to this post PLEASE give an explanation of why you think someone would win instead of just saying the easily take this because everyone will have there own opinion but I'm more interested in why you think they would win instead of who.
Who takes this and why?
I say gaara wins this battle mid-dif because his defense is too good. His sand is faster than Tsunde so not only will she not be able to avoid getting caught she would not be able to damage him because of the distance he can keep between them. Even if she summons that slug it won't be much of a problem because gaara can make a desert and defend and attack at the same time.
Who takes this and why?
I say gaara wins this battle mid-dif because his defense is too good. His sand is faster than Tsunde so not only will she not be able to avoid getting caught she would not be able to damage him because of the distance he can keep between them. Even if she summons that slug it won't be much of a problem because gaara can make a desert and defend and attack at the same time.