Why are number of edits reported in Profile and Users Tab different?

Question

I have seen the following question which is about what edits contributes towards badges:

• What kind of edits contribute to the editor badges?

Also these questions which talk about where I can see how many posts I have edited:

• Where can I see how many posts have I edited?
• http://meta.askubuntu.com/questions/6162/how-can-i-find-out-how-many-edits-ive-made

However, why do the number of edits reported in my Profile (see point 3 below) and the number of edits reported in Users Tab (see point 1 below) differ?

_{All the images are for my profile on Ask Ubuntu.}

1. As per this answer, in Users Tab → Editors Tab → all filter → it's 592:

   

2. As per this answer, the one's which count towards badges, it's 509 (no problem, this is clear why it's different):

   

3. As per this answer, in my Profile → Activity → Revisions → it's 616:

   

4. As per this answer, this data-query shows it as 739 (completely contrary to what the comment on that answer says):

   

Why are these numbers different — specially the ones mentioned in points 1 and 3?

Answer 1

• The first count (592) includes edits to your own posts, and only counts specific types of edits (excluding title and tag-only edits for example).

  _{^{(To verify, I made a (justifiable) edit to an older post of mine and my count rose by 1. Making another (justifiable) edit to a post I already edited this week and the count rose. I then removed a useless tag name from a question title, and the editors-tab count did not change. Similarly, edits that only add or remove tags do not increase the count either).}}

• The Data explorer query you used counts unique edits; editing a post twice counts as two edits. The badge counts edits to unique posts, where two edits to one post count as one edit for the badge.

  To get unique posts instead, query for COUNT(DISTINCT PostId).

• For the copy editor badge, a series of types of edits are excluded, prominently edits to your own posts.