Mr. Mxyzptlk (My Adventures with Superman) vs Rize Kamishiro: who would win?

Too close to call

Mr. Mxyzptlk (My Adventures with Superman) · DC · With Bowler Hat

Tier
7-A
Attack Potency
Mountain Level
Speed
High Hypersonic
Durability
Unknown

Rize Kamishiro · Tokyo Ghoul · Dragon

Tier
7-A
Attack Potency
Large Town Level, up to Town Level+
Speed
Relativistic
Durability
Mountain Level+

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