In this closeup of the latest "Osama", seen in a clip from the 9/11/07 video, not the obvious line at the top of the beard
under the mouth. Notice also that while the real Osama has a straight beard, this "Osama's" beard is very curly, thin enough to show the shape of his face,
and more than anything looks like 'crepe' hair used by theatrical makeup artists. Dying one's beard is strictly forbidden under Islamic law. Any devout (Sunni) Muslim would be aghast at an image of a purported spokesperson with a dyed beard. It's okay to tint it with henna (only), but in that case gray hair appears orange. Pakistan is full of guys sporting huge orange beards, but there is no market whatsoever for Grecian formula, at least not among the Wahhabis.
Other "Al Qaeda" videos are sharp and clear, but the new "Osama" tape is soft and indistinct
In this morph between the real Osama and the new one, the eyes and ears have been aligned, which shows that the mouth and brows are clearly not the same.