User blog comment:D. Cello/Assassinews 01/17 -- ACW New Admin, key Ubisoft figure leaves AC/@comment-4115686-20120131163037/@comment-1888015-20120131180834

Well, considering how Janissaries are quite frustrating and time consuming, I figure it would have been more of an incentive to use the double kill streak if they could kill a Janissary instantly if you got one of them or a guard into a kill animation and kept the timing as it were, so that players could take down two in one go.