I don't think he uses only an algorithim. He may have some kind of stat to sort the teams (I'm sure he does) but I don't think its quite as simple as just however they lineup in that one stat. (Though at the top it should be easier, since you don't need to worry about bracketing.
Also, I think you are shortchanging Vandy a bit; they are a better team than UConn, for instance. (Though the game wasn't as tough, since UConn was at home).
I believe Lunardi said he thinks SU should be the top 1, but he thinks the committee will go with UK.
I just read your link, I think you may be misinterpreting it? I don't think that is his stat; it is just saying, based on this ranking system, and using the field Lunardi projects, this is what they are projecting to happen.
Edit: Also, I went to the team rankings site, and I think it has Kentucky as #1 in it's ranking system, fwiw.