Dear Karen,
I have been able to have "some success" with RANK and SCORE.
Please find attached the file I used in Kobo Excel Analyzer.
I did the form in Kobo builder and the tailored in Excel.
The key lies in given teh "names" of the question with the suffixes given in the config. page of the Analyzer.

as you can see in the "survey" tab, I have set the "name" column as rank_1, rank_2...in some of the questions
Then in RANK tab I gave "weighs" (down to the right fields) 4,3,2,1...a 1st priority is more important and so on...
and score_A, score_B in other following this thought.
In the SCORE I have to create a "ghost question" and hide it in the "options to exclude, to have a nice chart....NOT PERFECT!
It worked for my test. I guess yo can further investigate this.
COMPARE remains a mistery to me...as my file shown something, but I cannot understand it:-), Will keep trying when I have a chance.
Hope it helped somehow:-)
Agree with Tino that it would be nice to Kobotoolbox working in rank, score and compare tabs, or alternatively creating a new wersion of the great tool, EXCEL analyzer that is compatible with it.
REGARDS
Iker Montes-Burgos