When talking about the ESPN rankings, I don't think they use the same rating system in 07 as they did in 08 as they do now. Look at St. John's recruits (I guess those archives are gone...) - the highest rated player was 83, I think, Paris Horne. With Burrell and Boothe grading in at 82 or 80 or something. Now any player who could sniff a high D-1 offer gets a mid 80's rating. Not saying that Burrell is the top of the line, but Malik Stith isn't considered a higher grade recruit at the time, meaning that their system in previous years had a different baseline.
(Actually now Paris Horne's a 93, making him by far the best player they signed in that year by their standards... this from a guys who was considering St. Bonaventure and the like.)