The point of the quote was not that it's in their interest to differentiate. The point was that, according to the complaint and for reasons they lay out, their marketing is dishonest and they frequently put their users at increased risk when it's to their financial to do so.

In other words, they're saying Apple's privacy and security stance is a bit like the trope of politicians saying "think of the children!" whenever they are selling a law that restricts liberty.