Courts spend a fair amount of effort on finding the most similar older sentences and making this sentence sort well with the older ones. That's reason.

In this case, I'd expect the court to look for older harassment cases, stalking, that kind of thing. $1.2B is effectively an infinite sum of money with no jail time and nothing else (AFAICT he's not blocked from living hear her or from using facebook, etc), so it sounds like a corner, not something that sorts well with other harassment/stalking cases.