Let me tell you something:

I live in abbotabad, Pakistan. The same city in which they say he was killed.

1- if he was killed, why didn't they show his dead body? I am sure no one can steal his body from just a picture.

2- What the hell was the world's most wanted criminal doing in my city?

US JUST wants to put pressure on pakistan by putting this fake operation forward.

US is pissed off at the actions of pakistan and US knew that pakistan is weak these days because of terrorists attacks.

Two possibilities here:

He was killed long time ago.

He is alive and hiding somewhere.

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And as for the Al-Qaeda part.

If Osama bin laden was killed by US, US would've been in chaos. Because Al-Qaeda have already begun "Jihad" (Crusade) against US.