Dortmund has had so many opportunities throughout the years to catch Bayern and steal a league title but they're a perpetual 2nd place club since Klopp left. Pitiful mentality.
Bayern can get slapped 5-0 every 5th game and still win the league by 10 points.
What Klopp did with Dortmund is a top 5 footballing accomplishment, a modern day miracle of some sort.
It was all Klopp but he also had catched the right time. Since Van Gaal took over in 2009 or so Bayern was bulding a real club strategy in playing mia san mia offensive dominant football, going with younger player like Müller, Alaba, Lahm and so from their own youth and buying player they really need for their playing game not only the best in die Bundesliga. But Like Rangnick said, it takes many years to get to stabile level. And Klopp sneaked right into the Bayern Build Up in 2011 and 2012 with a young, powerful and talented team. I mean take a look:
Lewy, Götze, Gündogan, Hummels, Kagawa, Perisic, Subotic,
Błaszczykowski, they were running people to the ground and executed very well on offense.
Klopp woke up the national giant. Going with ten in a row, two CL wins, two final losses and some dramatic games against Real who could have gone both ways.
