Boarbatusk vs Robert Speedwagon: who would win?

Too close to call

Boarbatusk · RWBY · Base

Tier: 9-B
Attack Potency: Wall Level
Speed: Hypersonic
Durability: Wall Level, up to Large Building Level

Robert Speedwagon · JoJo's Bizarre Adventure · Base

Tier: 9-B
Attack Potency: Wall Level
Speed: Hypersonic+
Durability: Wall Level

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