Definitely don't go into the interview with this attitude. They invited you for a reason -- don't make them regret it before you even get there. I interviewed here and was waitlisted also a few weeks back. My friend was admitted that same day with much lower stats. This whole process is a crapshoot + isn't entirely about stats. When you get to the interview day the dean will likely make it very clear that they truly view each application holistically and are very mission-based. Good luck on your II!
Also to my fellow waitlisted friend, wish I had more info about the WL. I really really dig MSUCHM and was heartbroken to get that WL too. Everything I've heard about their WL is anecdotal. Either it's no one gets accepted off of it, or people know a ton of folks who have. *shrug* I'm still holding out hope that I'll hear something good from MSU come April.