Five current Roten players started the 1-0 World Cup final win over Argentina, with new Real Madrid midfielder Toni Kroos also in Joachim Low's first XI, while Mario Gotze entered the action late on to score the extra-time winner.
However, far from expecting some of Bayern's stars to consider their international triumph as the pinnacle of their careers, club CEO Rummenigge is confident Guardiola can repeat the success he managed with Barcelona in 2011 - just a year after Spain claimed the World Cup in South Africa.
"Well it won't be easy, that's for sure," the 58-year-old told Bild when asked how easy it would be to motivate Bayern's Germany internationals.
"But don't forget, in 2010 many Barcelona players came back as world champions and they won the league and the Champions League!"
Rummenigge also believes German football will benefit from increased exposure across the globe following their triumph in Brazil, though he acknowledges this could count against them should foreign suitors come calling for the Bundesliga's biggest stars.
"[The World Cup] will help Bayern a lot. When we are in the US in August and bring six world champions with us it will be much more interesting for the Americans too. For the DFL [German League Association] it's easier with their marketing strategy, because many Bundesliga players became world whampions.
"But on the other side it will be harder to keep the players in Germany. Many clubs are now interested."
Bayern have enjoyed great recent success, having won two Bundesligas in a row and a historic treble in 2013 by adding the DFB-Pokal and Champions League, and Rummenigge has no doubt this has benefited the national side.
"Our players were lucky enough to have three coaches since 2009 that taught them a lot," he said, alluding to Louis van Gaal, Jupp Heynckes and Guardiola.
"They learned many things and developed themselves a lot - tactically and technically. The same goes for [Borussia Dortmund boss] Jurgen Klopp.
"Suddenly German teams started to play amazing soccer. The first highlight was the Champions League final 2013 in London and now the biggest ever – the World Cup.
"We are happy to have so many guys from our side there but we are happy with the whole German national team. They deserved it because they are great guys with great characters."