Way Big (Reboot) vs Vagnosaurus: who would win?

Way Big (Reboot) favored — Slight edge (~55%)

Way Big (Reboot) · Ben 10 · Base

Tier

LOW 5-B

Attack Potency

Small Planet Level

Speed

Relativistic

Durability

Small Planet Level

Vagnosaurus · Godzilla · Base

Tier

LOW 5-B, up to 5-B

Attack Potency

Small Planet Level, up to Planet Level

Speed

Supersonic+

Durability

Small Planet Level, up to Planet Level

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