I completely agree.
I also found that thinking of situations i've worked in teams, been a leader, worked under pressure, achieved my goals etc etc was more useful than my actual aviation knowledge. Find a list of typical interview questions on the web and write answers for each one. Most of the questions I had prepared came up in the interview.
I also found that it was the most relaxed interview i've ever had. It felt like it was just a chat about my life decisions, experiences etc