Kaiju No. 9 vs Killer (One Piece): who would win?

Killer (One Piece) favored — Favored (~65%)

Kaiju No. 9 · Kaiju No. 8 · Post No. 2 Absorption

Tier

6-B, up to 6-A

Attack Potency

Large Country Level, up to Continent Level

Speed

Massively Hypersonic, up to Ftl

Durability

Large Country Level

Killer (One Piece) · One Piece · Base

Tier

6-B, up to 5-C

Attack Potency

Country Level, up to Moon Level

Speed

Ftl

Durability

Moon Level+

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