Kamen Rider Ixa vs Son Goku (Classic Toei): who would win?

Kamen Rider Ixa favored — Slight edge (~55%)

Kamen Rider Ixa · Kamen Rider · Kamen Rider Ixa (Rising)

Tier

5-A, up to HIGH 5-A

Attack Potency

Large Planet Level, up to Brown Dwarf Level

Speed

Sub-Relativistic

Durability

Large Planet Level, up to Brown Dwarf Level

Son Goku (Classic Toei) · Dragon Ball · 23rd Tournament

Tier

5-A

Attack Potency

Large Planet Level

Speed

Supersonic+, up to Relativistic

Durability

Large Planet Level

A heuristic estimate from normalized VS Battles Wiki stats: tier, attack potency, speed and durability.