Raiden (Metal Gear) vs Opal: who would win?

Opal favored — Slight edge (~55%)

Raiden (Metal Gear) · Metal Gear · Metal Gear Rising: Revengeance (MGR)

Tier

HIGH 7-C, up to 7-B

Attack Potency

Large Town Level, up to City Level

Speed

Supersonic, up to Massively Ftl

Durability

Small City Level

Opal · Steven Universe · Base

Tier

HIGH 7-C

Attack Potency

Large Town Level

Speed

Relativistic

Durability

Large Town Level

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