Interesting that you post the bit that you did, but left out :
...He says the fact that Bin Laden appears fatter in the 2001 tape is down to the editing process, when subtitles were added and the image was squashed. His conclusion is that all the videos are of the same person - Bin Laden.
Furthermore, Mr Laws says it is not realistic to think that the US military would fake such tapes.
and
"I think those conspiracy theories that he is dead are pretty much laughable," he says.
"It's easier to explain things away with a conspiracy than to face up to the difficult reality..."