Superman vs Batman (with Help)
Batman (with 1 lb of Kryptonite) + Robin (with 1 lb of Kryptonite) + Captain America (with 1 lb of Kryptonite) + Spiderman (with 1 lb of Kryptonite) + Quicksilver (with 1 lb of Kryptonite)
vs
Superman
Fight takes place in Gotham City and characters start 200 feet apart.
Also assuming Superman does not want to completely destroy Gotham.