Beretta (Light Novel) vs Gigant: Take-Mikazuchi: who would win?

Gigant: Take-Mikazuchi favored — Slight edge (~55%)

Beretta (Light Novel) · Tensei Shitara Slime Datta Ken · Chaos Metalloid

Tier
1-C
Attack Potency
Universe Level+
Speed
Massively Hypersonic
Durability
Complex Multiverse Level

Gigant: Take-Mikazuchi · BlazBlue · The Embryo

Tier
LOW 1-C
Attack Potency
Low Complex Multiverse Level
Speed
Omnipresent
Durability
Low Complex Multiverse Level

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