Who care which world is the biggest?
There are probably much more Python programmers or Perl programmers than AutoIt programmers. So what?
And no, the source code was never stolen, or Jon (or people around him) didn't understood the point of the GPL license under which he release the source of AutoIt 3. BTW, Chris still comply to this license, even if very little of the original source remains in the current version.
The code might not win a beauty contest, but it is heavily commented, and efficient. And updated on a very regular basis. When I had to choose between the two languages (end of 2005), AutoIt 3 wasn't updated for months, while AutoHotkey seems to have a very fast response to bug reports.
I am surprised to see there is still lot of resentment (in some people) from the split of the languages, even though they address quite a different public: the differences of syntax should attract different people. It was the primary purpose of AHK: to keep the compatibility with AutoIt 2, which was dropped by AU3.
These arguments (number of users, etc.) are no way to convince somebody to choose one language. It is silly and childish (mine is bigger than your!

)