In all four sets Münster had at least 22:19 lead...
I think biggest advantage is the defense of Münster which is not noteable in these german stats.
In 2nd and 4th Münster had 21:13. And yes, their defense is very well organised, but IMO today the main difference was the experience of Thomsen, Hindriksen and Bathen. Wiesbaden's young players made too many mistakes and their would-be-leader Bednarova was nowhere to be seen helping them.