If you have prepared well for your examinations then surely you will perform well. Both of the examinations are difficult in their own way. However, if you work hard and study the subjects thoroughly, you can pass both the examinations.
My brother appeared for the SAT examination a while back and I believe that he would score well as he prepared thoroughly for the examination.
When selecting an institution for your undergraduate studies,
This is what my brother did for his preparation and this is how you can prepare too to get selected at IIM Indore.