The Christian crusaders (during Saladin's time/etc.) were not really malevolent or destructive - only perceived this way by the media (communications' "in-betweens") of some vampires (including Saladin's slayer, Yusuf) - often 2nd-hand ones. Furthermore, given the circular-graph nature of melee fighting, many of the wizard crusaders could win over Yusuf in a 1-on-1 sword fight, but played along with the terrestrial version.