Reno Ichikawa vs Tidal Wave (Dreamwave Unicron Trilogy): who would win?

Reno Ichikawa favored — Slight edge (~55%)

Reno Ichikawa · Kaiju No. 8 · Numbers Weapon Suit (Post-Training)

Tier
7-A, up to HIGH 6-A
Attack Potency
Mountain Level+, up to Multi-Continent Level
Speed
High Hypersonic, up to Sub-Relativistic
Durability
Mountain Level+, up to Multi-Continent Level

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

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