Pixels or Death explain that Assassin's Creed is not a stealth game, but a circus complete with all the usual routines. "Cannons and colour! Fire and lead! Theatrics and gymnastics!" And that, though the art of the game is fluent and often beautiful, it is not the art in which we have been trained through years of true stealth titles.
"Assassin’s Creed is murder made theatrical. Death comes not as a result of silent assassinations but circus executions; a choreographed routine by a brotherhood rigorously trained and skilled in their art. But this art is different from the discipline in which I am trained. This is not stealth. This is stealth entertainment."