How many leaders are there?

Al Qaeda captain, 5 U.S. soldiers killed in Iraq

Iraqi police said they killed an al Qaeda in Iraq leader on Saturday in the northern city of Samarra, a day after five U.S. soldiers were killed in two explosions elsewhere.
Mahmoud al-Douri, who also went by the name Abu Omar, was killed during a raid on a Samarra house, a police official said. Police said al-Douri shot at them and they fired back, killing him.

We often hear reports of "top level" al Qaeda being killed. Almost noted as something to be proud of - we are succeeding(?). But doesn't it seem that al Qaeda either had a lot of so-called leaders or is very adept at replenishing their losses.

Let's hope we are not announcing this as some sort of scorecard. Ball games need scorecards - wars don't.