Original Commentary
The difference between Robert and Brisbane? Brisbane has been around Kimberly long enough to know that you should never compare her to her mother.

Modern Commentary
This was also on our checklist: Kimberly hates being compared to her mother. Kimberly's relationship with her mother is complicated and will be explored further in the fullness of time. This is the first time we've directly mentioned it.
It comes up a few more times, mainly because they're more similar than either cares to admit, which is one of the reasons why they don't get along.
Upon reflection, Robert is saying that Kimberly isn't like her mother. Doesn't matter. The comparison is still there.- Terrence