Kroot vs Manda (Godzilla): who would win?

Manda (Godzilla) favored — Slight edge (~55%)

Kroot · Warhammer 40,000 · Krootox

Tier
HIGH 8-C
Attack Potency
Large Building Level
Speed
Hypersonic
Durability
Building Level+

Manda (Godzilla) · Godzilla · Base

Tier
HIGH 8-C
Attack Potency
Large Building Level
Speed
Superhuman+, up to Subsonic
Durability
Mountain Level+

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