White Diamond vs Toshiro Hitsugaya: who would win?

Too close to call

White Diamond · Steven Universe · Base

Tier

5-C

Attack Potency

Moon Level+

Speed

Relativistic, up to Massively Ftl+

Durability

Moon Level+

Toshiro Hitsugaya · Bleach · Matured Bankai

Tier

5-C, up to 4-A

Attack Potency

Moon Level+, up to Multi-Solar System Level

Speed

Relativistic

Durability

Moon Level+, up to Multi-Solar System Level

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