That Barca team won the CL 3 years prior to Pep taking other. In the year preceding his appointment it reached the semi final of the CL where they lost to our 2008 team which literally parked the bus for other 120 minutes in that tie. If anyone deserves credit for rejuvenating Barca, it is Rijkaard and Ronaldinho.
Pep's impact, while incredible is still overstated. Barca's core Busquets-Xavi-Iniesta dominated international football at the exact same time without a prime Messi or Pep. Both Barca's and Span's dominance coincided with the decline of this trio. As a matter of fact, Pep won't come close to another European trophy for another 12 years, hence why I rate both SAF and Ancelotti higher than him, since both of them could do it with vastly different squads, in different eras and both of them had far fewer resources, and inspite of it their European trophies weren't that far apart.
As for Mourinho's time at Inter. I simply stated that Inter haven't been close to winning a CL in a couple of decades until Mourinho took other. While they were winning title after title, it was mostly a formality since Italy was struck with the Calciopoli scandal at the time which saw Juve relegated and Milan had points deducted. At the same time we saw a massive exodus of players from Serie A, from which they never recovered.
As for Pep, it is very difficult to trully judge his managerial ability, since he never managed teams on the decline or that needed a massive rebuild like SAF, Mourinho or Ancelotti for that matter. Every time he took a job, everything was tailored for his success, and he delivers for the most part. While he does establish some fenomenal records, his european record is very lackluster.