That goes without saying Ricky mate.
We're saying they are now better equipped to deal with strenuous periods in a season, whereas in previous seasons they would be playing players that aren't really ready and look uncomposed/frantic.
Suarez is injured? Paco slots in.
Neymar out? Gomes or Turan.
Alba needs a rest? Digne.
And the players that are going to fill in will do so seamlessly. The only exception is Messi, every player is a massive downgrade, but you do what you can, and they look to have done quite well.