Spore Mantis vs Plantapocalypse: who would win?

Plantapocalypse favored — Slight edge (~55%)

Spore Mantis · Godzilla · Adult

Tier

8-C

Attack Potency

Building Level

Speed

Superhuman

Durability

Building Level

Plantapocalypse · Ben 10 · Base

Tier

8-C, up to 5-B

Attack Potency

Building Level, up to Planet Level

Speed

Hypersonic+

Durability

Unknown

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