Who Would Win?

Otto Gunther Octavius

Scientist, criminal mastermind

Genius-Level Intellect, Mechanical Tentacles, Superhuman Tentacle Strength, Telepathic Tentacle Control, Expert Engineer, Radiation Specialist

Four titanium-steel tentacles (mentally controlled), various inventions

Thunderbolts Army; Former leader of the Sinister Six and the Masters of Evil V; Former partner of Green Goblin

Vision

Avenger, synthezoid

Flight, Super Strength, Super Speed, Agility, Stamina, Invulnerability, Intellect, Radar Sense, Blast Power, Healing, Invisibility, Phasing / Ghost, Chameleon, Shape Shifter, Implants, Power Suit, Unarmed Combat, Gadgets, Adaptive, Electronic interaction, Holographic Projection, Electronic Disruption, Levitation, Duplication, Omni-lingual, Time Travel, Heat Vision, Density Control, Energy Absorption, Energy Manipulation, Berserker Strength, Leadership

Solar gem (forehead), vibranium-laced body, density manipulation hardware

Avengers, Avengers Unity Squad, Avengers West Coast, Cosmic Avengers, Dead Avengers, Defenders, Galactic Guardians, Guardians of the Galaxy, HYDRA, Infinity Watch, Iron Avengers, Nexus Beings, Outlaw Avengers, Project PEGASUS, Secret Avengers, The Galactic Avenger Battalion, The Machine Resistance, The Vi-Locks, The Visions, Weapon X, Young Avengers