Withered Sprout vs Manda (Godzilla): who would win?

Withered Sprout favored — Favored (~65%)

Withered Sprout · One-Punch Man · Base

Tier: 8-B
Attack Potency: City Block Level
Speed: Unknown
Durability: Unknown

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.