The Bayern Munich boss says that top-class players can play well irrespective of coaches and insists that his success at his former and current clubs is down to collective efforts
The Spain midfield duo flourished under Guardiola's stewardship at Camp Nou as the Blaugrana claimed 14 trophies from 2008 to 2011, including two Champions League titles.
Xavi and Iniesta were also at the heart of Spain's incredible back-to-back European Championship successes, as well as their triumph at World Cup 2010, but Guardiola argues that players of such calibre do not require coaches to get them to play at their best.
"Barcelona's players motivate themselves," the Bayern Munich boss told Sport.
"I did not teach Xavi or Iniesta to play. Coaches are here to lend a hand but they have been playing well for 20 years. Coaches do not make good players play well. They play well enough without me.
"I imbue a certain success but it's a personal matter. With me, they did not have the same success as they did with Tito Vilanova [when Barcelona reached 100 points in one league season]."
Guardiola - whose Bayern side were crowned Bundesliga champions in record time after Tuesday's win over Hertha Berlin - went on to underline that he left Camp Nou in 2012 as he felt that the time was right to move on.
"Perhaps I didn't explain it well," he remarked. "[My reason for leaving Barca] was purely personal. I felt the time had come. They are all responsible for the success we had, as is the same at Bayern."