I think France Moslem is more than Russia.. We could see at football player who join in France National Team like Zidane, Henry, Benzema, Nasri, Riberi, Anelka, sagna, Thuram, Mohammadou Diara and Lassana Diara. I Have a lot of moslem friends also in France who ever told me about Islam, so I Think France is The largest Islamic Religion in Europa