When a stunned 5-might unit is attacked by a 3-might unit in a showdown, who controls the battlefield after combat?

Ruling: When combat ends in a tie (both units survive), the attacker's units are recalled. The defender retains or gains control of the battlefield depending on who was the attacker.

Sequence:

• The stunned 5-might unit deals no damage to the 3-might unit
• The 3-might unit deals 3 damage to the 5-might unit (not enough to destroy it)
• Both units survive, resulting in a tie
• The attacker's units are recalled
• Damage marked on all units is cleared since combat has resolved

Nuances:

• If player A's unit was already on the battlefield, player B is the attacker. B's unit gets recalled and A retains control.
• If player A was contesting an empty battlefield in the same showdown, then A would be the attacker and B the defender. A's units would be recalled, B gains control of the battlefield, and B can score it if they haven't already this turn.