The Bavarian giants lock horns with Chelsea on Saturday in the Champions League final after the Blues disposed of the Blaugrana in the semis.
Ribery disputed the notion that the English club are a weaker opponent than Barca and warned his team against underestimating the threat posed by Roberto Di Matteo's men.
"When it comes to the game, Barcelona are stronger," Ribery told Kicker. "But if you look at organisation, tactics, and set pieces, then Chelsea are better.
"In the semi-final, Chelsea played like they had to against a team like Barcelona, and in Munich they will take a defensive approach, with a well-organised and compact team.
"It will be very hard for us."
|CHELSEA CLEAN SHEET?
|11/4||Chelsea are 11/4 to keep a clean sheet against Bayern Munich with 188BET|
Bayern head into Saturday's clash at the Allianz Arena on the back of a 5-2 defeat to Borussia Dortmund in the DFB-Pokal final.