Yes, because she frontloads that power from Taxis and Crusade already in the ancient/classical era, whereas the Aztec's power grows slowly (apart from eagle warriors, those are frontloaded).
She can get around +15 combat strength from crusade and taxis in early classical era, whereas the Aztecs wont see that combat modifier from their ability until the late game.
And you are not committed to an early push in the same way either, because you have the holy site infrastructure to fall back on if your invasion goes south.
She is just broken.