You do not need to have specific statistics in order to get into Harvard. I have heard from people anywhere from perfect scores to 1900 and so on (this is a pretty big range, and certainly may be bigger). You hardly hear people boasting about their scores, which shows you a lack of pretentiousness. GPA is not very helpful because different high schools have different scales; in this case, your class rank is helpful. Harvard has a scale where valedictorians and salutitorians get top scores, then points assigned to certain percentages (like top 10%, and such), and bothering about one more point may not necessarily make you more impressive in the eyes of the admissions committee. As for AP Scores, 4's and 5's help, BUT they are kind of extra academic records and doing bad on them does not necessarily hurt you.
Hope this helps.