2012 versus 2013 535i M sport package

I've been getting confused about the differences between the "M sport package" for the 2012 versus 2013. I think I have it figured out now. The 2012 M sport package included the multi contour seats and Dynamic Damper Control while (according to bmwconfig.com) the 2013 package does not. So the 2013 package is $1900 less, but doesn't include $2300 worth of options. Does it look like I've got it figured out? Thanks for the help.

(duped from ED board)