Vakama vs Thalia Grace: who would win?

Thalia Grace favored — Slight edge (~55%)

Vakama · Bionicle · Base

Tier

7-B, up to HIGH 5-A

Attack Potency

City Level+, up to Brown Dwarf Level

Speed

Massively Hypersonic+, up to Relativistic

Durability

City Level+

Thalia Grace · Percy Jackson · Heroes of Olympus

Tier

7-A

Attack Potency

Mountain Level

Speed

Massively Hypersonic

Durability

City Level+

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