Kevin 11,000 vs Aventurine: who would win?

Aventurine favored — Favored (~65%)

Kevin 11,000 · Ben 10 · Base

Tier

4-A, up to 1-B

Attack Potency

Multi-Solar System Level, up to Hyperverse Level

Speed

Massively Ftl+

Durability

Multi-Solar System Level, up to Hyperverse Level

Aventurine · Honkai: Star Rail · Aventurine of Stratagems

Tier

3-C, up to 2-A

Attack Potency

Galaxy Level, up to Multiverse Level+

Speed

Ftl, up to Infinite

Durability

Galaxy Level

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