You should watch seal team 6 documentary by discovery channel.
As is the standard seal tactic OBL was double tapped, then shot in the head from a distance of few feet.
One thing is for sure, OBL is dead, but if not that night and then when?
If he had already died earlier, why didn't Al Qaida say something?
Why did AQ accept that OBL is dead..only after
Abbottabad raid?
What about OBL's son who was killed in this raid, who's body is still in Pakistani possession or other OBL's children found in the house.. one can always run a DNA and confirm, if they are related to OBL.