Bah!
No, he Equation Editor in MSWord has probably never *sold* the product, but it has made unnecessary the acquisition of a separate tool just to do that job for those who need to make documents with equations in them.
I'm seriously not seeing the point of removing features to "make menus smaller", no matter who makes the product in question. The product won't be any cheaper when it has been trimmed (unlike the chocolate bar).
In fact this article has highlighted the need for a metaphor for describing comparisons so out-of-left-field "Apples and Oranges" is not emphatic enough.
I propose we use "You are comparing chocolate bars to software features" to cover those eventualities.