Spikeweed vs Onaga: who would win?

Onaga favored — Slight edge (~55%)

Spikeweed · Plants vs. Zombies · Garden Warfare - Battle for Neighborville

Tier

2-C

Attack Potency

Low Multiverse Level

Speed

Immobile

Durability

Low Multiverse Level, up to Multiverse Level

Onaga · Mortal Kombat · Original Body

Tier

2-C

Attack Potency

Low Multiverse Level

Speed

Superhuman, up to Sub-Relativistic

Durability

Low Multiverse Level

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