Oh, and I also played Arcade Advanced on the GBA.

The games all do seem to be their arcade versions (or at least as those can accurately portrayed on the GBA). In order to get Frogger to work, the screen has to scroll (only about half of it fits at one time).

Rush N Attack is definitely different than the NES version. The stage layout is somewhat different (though neither version's first stage is particularly memorable), and the control is also different: On the GBA, the control is more "normal" : You push A to jump. On the NES, I think you have to press "up" to jump.

"Perhaps one did not want to be loved so much as to be understood."
-Orwell