The question is -> If Pep was the manager when Yaya Toure reached his prime, would he be as influential and dominating midfielder as Rodri is right now..
But also we should consider, that Pep decided to choose Busquets for that role and sold Yaya
With Macini or Pellegrini systems, we weren't tactically ready for the bigger European teams.. But individually Toure was incredible and in this Pep system, where everyone knows what to do, everything is well-planned - it's easier for the player to show his skills and when team competes at a higher level, wins titles, you can single out each player and talk about his individual abilities.
For example David Silva. He was incredible before and after Pep. Same applies to Aguero and Kompany and Fernandinho. So I guess, Toure we have been same, if he had aged a little bit later.
So I would say Toure and Rodri are on the same level, but Rodri is luckier due to reason, that his prime aligned with Pep's period and this magnificent team.
I think Rodri has full potential to be named as the best defensive midfielder PL and world football has ever seen.