Tidal Wave (Dreamwave Unicron Trilogy) vs Kaiju No. 14: who would win?

Kaiju No. 14 favored — Slight edge (~55%)

Tidal Wave (Dreamwave Unicron Trilogy) · Transformers · Mirage

Tier
HIGH 7-A
Attack Potency
Large Mountain Level
Speed
Superhuman, up to Massively Hypersonic+
Durability
Large Mountain Level

Kaiju No. 14 · Kaiju No. 8 · Base

Tier
7-A
Attack Potency
Mountain Level+
Speed
High Hypersonic, up to Ftl
Durability
Mountain Level+

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