Both of these magical girls are pretty powerful, but only one of them can walk away with a win. Sayaka Miki has great regenerative abilities which allow her to excel in close quarters combat. Mami prefers the long range approach, but her incredible speed makes either option viable. I believe she would be able to keep Sayaka at a distance and that will really help her seal the win here. Sayaka never got as much experience as Mami which prevented her from improving. This could easily change with a sequel show someday though. Mami Tomoe wins.