It's called Papa John's quality guarantee...but is it?

Here's the promise: "Love your pizza or we'll deliver you another one absolutely free"

Could be a promise.

Could also be a threat.

"If you DON'T love your pizza and if you then complain to us about it, you'll be looking at another one from us, mateys!"

One bad pizza is bad enough... so you wouldn't really want the prospect of another one dangling over your head (in a manner of speaking), would you? :-)