The experiment was more successful in the “free” West than the East. Witness the rise (or maybe the admission) of at least cultural Christianity in areas of the old Iron Curtain, and the total decay in much of the West.
The truth of your statement can be seen all around us. The all-important difference between the two revolutionary programs is tactical. The force and violence used by the Bolsheviks ultimately failed whereas the frog-slowly-boiling-to-death tactic used here has born much rotten fruit. As one freeper pointed out, that rotten fruit is even in Free Republic. It was also on display at CPAC.