I have an idea. Why don't we have a corresponding "Mohammad Deniers Conference". We can claim that Mohammad never lived, that the Koran was made up by a bunch of stoned Arabs in a bazzar in Mecca and that all claims by Muslims to validity, legitimacy and territory are bogus.
That would be almost as bad as suggesting that they worship a meteor.
One doesn't have to lie or make stuff up about Muhammad.
Read this debate between former Muslim Ali Sina and Iranian Ayatollah Montazeri.
http://www.faithfreedom.org/debates/montazeri.htm