I had a phone interview yesterday which I presumed would be all about what I've done and how I could do the job. The hiring manager was ex-Amazon (surprise!) so it was a litany of "tell me about"s instead.
In the Amazon case, at least one can look at the Bezos Commandments ("The Leadership Principles"(tm)) and mock up answers in advance - twice to take care of double asks. It's hard to predict by comparison what some random is going to use.
The trick is to answer the questions in a way that provides data such that it highlights what you did. For interview debriefs we need to provide explicit data points. At first I was put off by the mechanical nature, but I now do feel it at least attempts to have a more objective and lower bias standard.
...although some people take it too far IMO. I try to keep the behavioral questions more of a fluid conversation about work they've done.
Convert it to "learning experience" or "amazing opportunity to discover".
This way it will be hard for them to put you down no matter how hard they'll try by their books.
You may also quote Bezos a few times and make sure they are aware you are quoting Bezos (if you're interviewing at AMZN).