Ella Kay I hadn't thought about it in those terms, but you're absolutely right! In order to compare James Middleton properly, we would have to compare his situation and interview with Hello magazine to Sophie's SISTER doing such a thing, if Sophie had a sister, rather than Sophie herself.
It isn't the same thing at all, is it? And James Middleton didn't mention Prince William, he didn't mention Catherine, and he didn't mention royalty. In essence, he isn't exploiting Prince William or the royals at all. He isn't exploiting his sister either, if he didn't mention her.