Formal presentations are rarely the final step in a German decision making process. Rarely do German managers make a critical decision shortly after having listened to the presentation of various options.
Instead they will take time to reflect, discuss with their direct reports, get additional input from subject area experts, use colleagues at different management levels as sounding boards.
The act of persuasion in the German business context is seldom aimed at getting a specific decision. Truly persuasive argumentation seeks to influence, steer, route the thinking to or in the direction of a desired decision.