Kamen Rider Ixa vs Susan Strong: who would win?

Susan Strong 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

Susan Strong · Adventure Time · Seasons 6-8

Tier

5-A

Attack Potency

Large Planet Level

Speed

Ftl+

Durability

Large Planet Level

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