To be in a position of power or control over someone or something else. Likened to having the best hand in a card game. He's bigger than me, and stronger, and faster—he just has all the aces.

To be in a position of power or control over someone or something due to having all the advantages or resources. Likened to having the best hand in a card game. He's bigger than me, and stronger, and faster—he just holds all the aces.