Temari takes this because during her battle with Shikamaru during the Chunin Exams, Temari could only use her weakest wind attack called kamaitachi wind scythe no jutsu. Even then she was equal to Shikamaru.
During the Sasuke Retrieval Arc, Temari gained two new jutsus both of which were stronger and had a wider range than her basic one.
Now that she is a jounin, she gained two other attacks as well.
Those attacks have a very wide range and if Shikamaru had trouble avoiding the basic wind scythe then how does he dodge her newest jutsus especially since no one has yet to successfully dodge them?
Temari takes this mid difficulty.