Look at it this way, together with Drogba and to a certain extent Falcao, Suarez is the most annoying striker the defenses would like to face. Falcao is hard to handle due to his amazing sense to position himself, while Drogba and Suarez, apart from knowing where to position their ass, are kicking and fighting and annoy the shit out of the defenders with their constant movement and dirty play.
Suarez's record in Liverpool last year is giving a wrong picture. Actually, it's even amazing how he still managed to score 17 in 39 for the most impotent big team in the world.
Just imagine on how many levels will this player improve our attack.
Dzeko might score more goals than Suarez in Juve only if they both play for Juve. If only one of them plays here, Suarez will 100% score more than Edin.