Superman (Superman and Lois) vs Z7-Mech: who would win?

Superman (Superman and Lois) favored — Slight edge (~55%)

Superman (Superman and Lois) · DC · Solar Charged

Tier
2-C
Attack Potency
Low Multiverse Level
Speed
Massively Ftl, up to Infinite
Durability
Low Multiverse Level

Z7-Mech · Plants vs. Zombies · Z7 Imp

Tier
2-C
Attack Potency
Low Multiverse Level
Speed
Massively Hypersonic, up to Relativistic+
Durability
Low Multiverse Level

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