User blog comment:D. Cello/Assassinews 03/05 -- ACWiki's Fan Section and AC3 first trailer/@comment-120.28.136.25-20120311071018/@comment-80.160.105.10-20120311141824

Killing streaks makes the game flow and in AC3 they have tweaked to become even better. Besides who wants to stand around for 15 second in front of a guard waiting for him to strike? Sure it's more difficult but it's not fun nor realistic.