In other words, the whole mahdi thing will tell us if Bin Laden is simply an angry power hungry run of the mill terrorist thug who simply has the money and means to engage in "big" terrorist acts (as compared to the average terrorist car bomb in front of mcdonalds in jerusalem), or a true loony wacko, the likes of which have not been seen since Hitler.
Bin Laden's a classic megalomaniac. His psychopathologies make comparisons to Hitler not unwarranted.