Ulthuan (Warhammer Fantasy) vs Aldmeri Dominion (Elder Scrolls)

Two Fantasy High Elf armies fight each other.

The Summerset Isles suddenly appear 500 miles south of Ulthuan. Both governments declare war on each other and try to conquer the island of the other. Use the Age of Sigmar version for Ulthuan and the 4th Era version for the Aldmeri Dominion. No prep time and everyone is in-character. Who wins?

Ulthuan is on an entirely different level of power.

Yeah, I think Ulthuan stomps without any prep. They have firearms iirc and canons