Iron ManvsGojo Satoru

Iron Man in his most powerful suits is a formidable opponent. The Bleeding Edge and Godkiller armors give Tony Stark strength approaching Thor-level, energy weapons that can harm Thanos, flight capability, and an AI-assisted tactical system. His technological versatility means he can adapt to almost any opponent, and his genius intellect lets him innovate mid-battle.

Gojo Satoru, however, possesses abilities specifically designed to counter technological approaches. Infinity creates an absolute mathematical barrier — objects and energy decelerate infinitely as they approach Gojo, never actually making contact. No amount of weapon power can overcome this because the barrier doesn't have a strength threshold — it operates on the fundamental mathematics of convergent infinite series.

Iron Man's repulsors, missiles, and even his most powerful energy blasts would slow to a halt before reaching Gojo. The Uni-Beam, his most devastating chest-mounted weapon, would be subject to the same infinite deceleration. Tony's analytical AI might eventually understand what's happening, but understanding Infinity doesn't provide a way around it — the mathematical principle is absolute.

Gojo's Hollow Purple, meanwhile, erases matter at the atomic level. Iron Man's suits are incredibly durable, having survived hits from Thor and Thanos, but Hollow Purple doesn't damage materials — it removes them from existence. No amount of armor plating counters atomic erasure. Gojo can also use his Blue and Red techniques to manipulate the suit regardless of its structural integrity.