Grisha Yeager vs Death Stalker: who would win?

Death Stalker favored — Slight edge (~55%)

Grisha Yeager · Attack on Titan · Titan Form

Tier

8-B

Attack Potency

City Block Level+

Speed

Subsonic, up to Supersonic

Durability

Building Level

Death Stalker · RWBY · Death Stalker

Tier

8-B

Attack Potency

City Block Level

Speed

Hypersonic

Durability

City Block Level

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