Understanding Bias in internal interviews

So I recently went for an internal interview the third time around, and the third time I was unsuccessful. This was the second time I interviewed that they asked competency questions. They asked me a question around my current job role and some problems that I had uncovered. It was arguable that the questions that they asked were even to do with the role I was applying for. it felt a little bit like they were holding me accountable for my managers failings. I later found out from another candidate that was successful that they weren’t asked the same questions, and these questions were very specific to me and my circumstances. Am I right in saying that that’s fair for not getting the role if the other candidates weren’t asked the same question?