I believe Baghdadi is not the leader of ISIS. He's just the manager of those rebels but there is a big head behind this terror group, it's either EU, US and the Rothschild.
No one knows for sure. Baghadadi was an ordinary guy just like any small-time criminal before he was chosen as the leader of the ISIS. How did he managed to receive all those weapons and followers? There is something fishy about him. But the truth will only be known, if he is captured alive by either the Russians or the Syrians. And the chances for that are very low.