I've been to the Butler U. campus several times, first while on speech and debate teams in high school and later I lived in Indianapolis in the early 1970s less than 4 miles from the campus. Now I live only a few miles from the Duke campus and have friends and relatives who are Duke alumni. On paper, and from watching them both, Duke looks like it should win.
Problem is, I said the same thing about Syracuse, Kansas State and Michigan State. I think it will be a very interesting game to watch.
Prediction? Nah, I'm not up to the risk.