Miao Ying vs Abaddon: who would win?

Abaddon favored — Slight edge (~55%)

Miao Ying · Warhammer Fantasy · Base

Tier

HIGH 6-B

Attack Potency

Island Level, up to Large Country Level

Speed

Supersonic, up to Massively Hypersonic

Durability

Large Country Level

Abaddon · Godzilla · Base

Tier

6-B, up to 4-B

Attack Potency

Country Level+, up to Solar System Level

Speed

Subsonic+, up to High Hypersonic+

Durability

Country Level+, up to Solar System Level

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