Tata's tactics don't help anyone but you can still see the gulf in class between him and Alexis and Neymar. Let's not blame everything on Martino now and pretend he was any better under Tito who had his tactics spot on in La Liga. 5 La Liga goals until middle of May from Pedro while being a starter under Tito, dropped by Pep the season before, stopped scoring in the 2nd half of the season in 10/11 ... Basically his last string of consistently good games was somtime back in 2010 when teams were still playing a high line against Barca like those famous Real Madrid and Espanyol trashing. Since then he's shown glimpses here and there (hattrick against Real Betis fodder) and his fans use that opportunity to declare "PEDRITO IS BACK", "always believed in him", blabla and pretend the following 2 months that Pedro was in good form.
One of Alexis and Pedro has to go this summer as far as I'm concerned as they are fairly similar and need to make room for a different type of striker. Rationally it is very easy to choose between Alexis and Pedro. Irrationally one is from La Masia and the other isn't.