The first approach (in Germany) will be the more traditional one. A fancy (well - more or less...) presentation following a clear path and not necessarily requiring any interaction with the audience. In Amsterdam (Scrum Day Europe) I will conduct a workshop on the topic. The participants will be heavily involved and won't be able to get away without collaborating. Only a couple of slides will set the stage before everybody gets to work. This workshop will be adapted and repeated on the same day.
So while the German conference sets a baseline in participant satisfaction, the new approach will measure twice if the collaborative workshop approach is superior.
The results will then help to improve the explanation method further. I will of course let you know how it went
