We've had some good back up strikers over the years Di Vaio, Zalayeta, Miccoli, Matri etc
Even Del Piero spent alot of time on the bench. We had likes of Quags and Iaquinta coming off the bench alot. Players who when called upon were capable of making a difference.
Kean isn't half as good as any of these players and maybe never will be.
Good substitutes are essential for title winning long seasons. See the impact Padion, Giacherini, Pepe and even Boriello (scored one of the most important goals of the season) had here when we won serie A in 2012.
When Berna and Kean came on today I knew they wouldn't do a thing. The game was essentially dead. This isn't food enough for a club with our ambition.