Spore Mantis vs Solomon Grundy (Post-Crisis): who would win?

Too close to call

Spore Mantis · Godzilla · Adult

Tier

8-C

Attack Potency

Building Level

Speed

Superhuman

Durability

Building Level

Solomon Grundy (Post-Crisis) · DC · Base

Tier

8-C, up to 2-A

Attack Potency

Building Level, up to Multiverse Level+

Speed

Peak Human, up to Massively Ftl+

Durability

Building Level, up to Multiverse Level+

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