Jayna vs Bjorn: who would win?

Bjorn favored — Slight edge (~55%)

Jayna · DC · Base

Tier

9-C, up to 5-A

Attack Potency

Street Level, up to Large Planet Level

Speed

Massively Ftl+

Durability

Below Average Human Level, up to Large Planet Level

Bjorn · Vinland Saga · Base

Tier

9-C, up to 9-B

Attack Potency

Street Level, up to Wall Level

Speed

Unknown

Durability

Street Level, up to Wall Level

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