Flying Monkey vs Iceberg Lettuce: who would win?

Flying Monkey favored — Slight edge (~55%)

Flying Monkey · Dungeons & Dragons · Base

Tier

10-C, up to 9-B

Attack Potency

Below Average Human Level, up to Wall Level

Speed

Below Average Human, up to Subsonic

Durability

Below Average Human Level, up to Wall Level

Iceberg Lettuce · Plants vs. Zombies · PvZ2 (Level 1 - 10)

Tier

10-C, up to HIGH 8-C

Attack Potency

Below Average Human Level, up to Large Building Level

Speed

Immobile, up to High Hypersonic+

Durability

Unknown

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