How big is the company I work for?

A rather colorful description in this story –about one of our sports properties– in the Fresno Bee:

“Fresno State doesn’t just do its own deals any more. It has a company called Learfield Sports for that. Learfield is slightly bigger than Greenland and the ozone layer combined. Learfield pays Fresno State a flat rate to sell its “multimedia rights.” Fresno is one of nearly 50 schools that lets Learfield handle its radio rights, TV rights, even the signs hanging in Bulldog Stadium.”

Is that what they call a mixed metaphor?