When looking at the Story Engine it has Judgment in as an OS Plot Dynamic though its definition seems to be more concerned about the MC journey.  I was wondering why it is in the OS Plot Dynamics window when, for me, it feels like it belongs more to the Main Character window?

Short answer: No and Yes.

The Story Judgment sits half in the Main Character Throughline and half as part of the story's plot dynamics.

THE NO PART

The Story Judgment is about the resolution of the Main Character's angst. If it is resolved, that is 'good.' If it is not resolved, that is 'bad.' This is what makes it seem like Story Judgment should be part of the Main Character dynamics.

THE YES PART

Most people do not make a distinction between Outcome and Judgment when thinking about story endings. They generally think of the ending as either a happy ending, a tragedy, or a bittersweet ending. AND, they tend to associate the story ending with the part that Dramatica identifies as the Overall Story throughline.

When we separated out the Outcome and Judgment components, we kept them together and put them in the Plot Dynamics since both were associated with how the story ended. Each throughline has character, theme, plot, and genre elements, so putting the Judgment with the plot dynamics is a valid way to understand that dynamic.