Final Destination [Maximum] Vol.7 Ultimecia X Ganondorf

All out fight of might and magic [no special items, though]. The Ganondorf in this fight is that of every ZELDA GAME combined.

Fight starts on the moon in a dome where they can breathe.

Okay.

If this is Time Compressed Ultimecia, which, because you did not specify, forum rules say it is, she utterly annihilates Ganondorf and proceeds to eat the three Goddesses.

Why

Let me specify that elements outside their own power, that give them power, is not allowed.

This battle is ALL them.

Ganon gets most of his power from the Triforce of Power. Sounds like you've taken that away from him, so he probably would still lose.