Without the Infinity Gauntlet, Thanos can't keep up with Goku's universal-level power and speed.
Base Thanos is one of the most powerful beings in the Marvel Universe โ but Goku operates at a scale that makes Marvel's cosmic hierarchy look modest by comparison.
Thanos can trade blows with the Hulk, survive attacks from Galactus, and project energy at planetary levels. These are incredible feats. But current Goku threatened to destroy Universe 7 just by clashing fists with Beerus โ and he's gotten exponentially stronger since then.
The speed gap is the most decisive factor. Goku in Ultra Instinct moves and reacts at speeds that make lightspeed look pedestrian. Thanos, while fast by Marvel standards, doesn't operate anywhere near this tier. Goku could land thousands of planet-busting strikes before Thanos could process what's happening.
With the Infinity Gauntlet, Thanos rewrites this equation entirely โ the Gauntlet operates at a level that transcends power scaling. But without it, Thanos is simply outclassed by Dragon Ball's exponential power creep.
Goku's power is universal-scale with speed feats millions of times lightspeed. Ultra Instinct provides autonomous combat reaction that bypasses conventional tactics. A serious Kamehameha could output more energy than Thanos has ever had to tank. Goku also gets stronger during battle โ a prolonged fight only makes the gap worse.
Thanos's intelligence and strategic mind could find unexpected approaches. He's survived cosmic-level encounters through cunning rather than raw power. Thanos has also been enhanced by Death's curse, cosmic energy, and various power sources that boost him well above his base level. With any Infinity Stones, the matchup shifts dramatically.
Goku wins convincingly without the Gauntlet in play. The Dragon Ball power scale has escalated so far beyond Marvel's cosmic tier that base Thanos simply can't compete with current Goku. With the Gauntlet, Thanos wins โ but that's true against almost anyone.
Goku also fights
Thanos also fights