Sauron (Lego) vs Masaru Daimon (Danganronpa): who would win?

Masaru Daimon (Danganronpa) favored — Slight edge (~55%)

Sauron (Lego) · Lord of the Rings · Base

Tier
8-C
Attack Potency
Wall Level, up to Building Level
Speed
Peak Human, up to Superhuman
Durability
Wall Level

Masaru Daimon (Danganronpa) · Danganronpa · Base

Tier
9-A, up to HIGH 7-C
Attack Potency
Small Building Level+, up to Large Town Level
Speed
Superhuman, up to Relativistic+
Durability
Small Building Level+, up to Large Town Level

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