Who Would Win?

Him

Avenger, savior of worlds

Cosmic Energy Manipulation, Superhuman Strength, Flight, Energy Blasts, Regenerative Cocoon, Quantum Magic

Soul Gem, Karmic Staff

Infinity Watch, (as the Magus) head of Universal Church of Truth in an alternate future

Uxas

Ruler of Apokolips, God of Tyranny

Flight, Super Strength, Super Speed, Stamina, Invulnerability, Telepathy, Telekinesis, Intellect, Teleport, Force Field, Blast Power, Healing, Super Sight, Feral, Psionic, Insanely Rich, Gadgets, Divine Powers, Size Manipulation, Immortal, Necromancy, Tracking, Astral Projection, Animation, Energy-Enhanced Strike, Reality Manpulation, Matter Absorption, Dimensional Manipulation, Energy Shield, Siphon Lifeforce, Power Mimicry, Gravity control, Darkness Manipulation, Heat Vision, Earth Manipulation, Marksmanship, Power Item, Death Touch, Energy Absorption, Energy Manipulation, Cosmic Awareness, Heat Generation, Leadership, Longevity

Omega Beams, Apokoliptian technology, parademons army

Alien Alliance, Dark Army, Darkseid's Elite, Intergang, Legion of Doom, New Gods, Secret Society of Super Villains