Dimension Sword vs Royal Hypno-Flower: who would win?

Royal Hypno-Flower favored — Slight edge (~55%)

Dimension Sword · Dragon Ball · Base

Tier

2-C

Attack Potency

Low Multiverse Level

Speed

Immobile, up to Infinite

Durability

Low Multiverse Level

Royal Hypno-Flower · Plants vs. Zombies · Base

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.