Padmè Amidala (AOTC) VS. Leia Organa (ROTJ)

Battle to the death, everything allowed.

Leia.

Padme gets smacked down

Leia's had way more combat experience, and is a better shot.

Padme may have saved her people from an invasion, but Leia helped lead a rebellion against the Galactic Empire for years and also killed Jabba.