well you can fly, use turbo, recharge energy, and launch energy attacks. thats basically the only similarities. they use their own original characters and attacks. for example, in esf, a beam would usually power struggle with an energy ball like a bba or sb. but in godz (ut version anyways), a beam has a limited range, and either detonates the ball, or grabs on to the ball and use the beam and ball as a weapon together. melee is basically like bfp's melee, but with less animations. teleport is like bfp's teleport also, with double tapping movement keys instead of a teleport button. i havent played the new version (i dont have ut2k3), but if its anything like the ut version, i dont consider it anything like esf.