I used to work at Georgetown and with that institute very directly, and contributed to help create it.
I haven't read the latest one in enough detail to tell you why we decreased those few spots. What I can tell you is that it is a limited ranking, as most rankings are. The last time I checked, it didn't include things related to women in the security forces. I'll have to go through and identify exactly why that was. With any ranking of that nature, I take it as an indication but not something of concern if we're still talking about the movement of a few spots in the top range.