See attached screenshot or http://musicbrainz.org/user/jlt2 (as long as the status is up to date).
It's because they have more than 10 accepted edits (see MBS-2987, nobody seems to be sure whether it's supposed to be AND or OR).
I guess this isn't a duplicate though. If the two differ, then it means we've got the logic in two places in the code, when ideally they should both be using the same function.
In review at http://codereview.musicbrainz.org/r/1824/diff/#index_header, I believe.