Lord Slug vs Cooler

Pardon me if this is a stomp, I'm no expert on power levels.

The two conquerers have clashed and have agreed to a one on one fight on a barren world. Lord Slug is young and Cooler is as he was in the first movie. Who wins?

Cooler wins. It is a stomp. With the Dragonball Z movies usually the next movie has a stronger villain. Goku had to go super saiyan in order to defeat Cooler. Not to use ABC logic but it's like this.

Cooler>Freiza>Lord Slug

Since Cooler has 1 more form that Freiza was unable to transform into.