The 27-year-old put forward his theory that the club has undergone a phase of continuous evolution since the early 2000s, and their eventual success is simply a culmination of their efforts over the past decade.
"I believe this is the best Barca team I’ve ever played in," Iniesta told Fifa.com. "That's down to the way our play evolves, with the teams getting stronger every year.
"The challenge facing us is to improve day after day, year after year, something we've done in every respect – tactically, physically and technically."
Due to Pep Guardiola's increasing use of a 3-4-3 formation, as well as the recent acquisitions of Cesc Fabregas and Alexis Sanchez, Iniesta has been rotated on a number of occasions this term but the midfielder fully acknowledges the sacrifices needed to make a successful team.
"All of us want to be on the pitch, and the longer the better, but the coach knows what he wants," he continued.
"What matters is that we all contribute so as to have the best chance of winning honours. It's a question of squad management, and that’s something I understand."
Having won everything that there is to win under Guardiola's reign since 2008, Iniesta dismissed his team-mates are getting complacent, insisting that the most satisfying challenge will be defending their silverware, as their rivals have now begun to carry a greater threat.
"That’s easy; you never tire of winning and you can better face challenges when you’re winning, not losing," he maintained.
"The problem, if I can call it that, is that now our opponents prepare [for us] better and it gets harder. But that’s part of the challenge and something I thrive on."
Starting last month and continuing every Friday through to January, Goal.com will publish extracts from Graham Hunter's highly-anticipated book, Barca: The Making of the Greatest Team in the World. Ahead of Saturday's Clasico, tune in on Friday for an exciting extract on how Jose Mourinho's Real Madrid are closing the gap on Barca following a period of Catalan dominance. Don't miss it!