AutoMotion Plus can be turned off. The panel itself will always upconvert to 1080p at 120hz, because that's what the panel is. So that minimal amount of processing will have to be done regardless. The AutoMotion Plus feature processes that image to reduce the judder and blur when the processing feature is turned on.

The additional judder settings is a customizable feature that adds more options to each input. Since every input is independent in the settings, one option to dejudder would be more relevant for say TV viewing than Blu-Ray inputs. But you get that option, and it's available if you want it.

The B series, that is 2009 series, are have improved features and additional detail settings that allow you to customize the picture more.