People who can troubleshoot and trouble solve will prosper better than people who work normally. I have my own experience in this respect. In our organisation, we used to encourage people who show interest in showing their ability in solving the problems and make the processing is easy. Especially when we develop a new product we will be getting many problems. Some people used to solve those problems with their thought processes and hard work. Such people used to get rewarded more than normal guys. Such person used to go to higher levels very fast irrespective of their age and number of years of experience.
Knowledge is power.
You cannot shoot from an empty quiver. One should have some extra qualities and abilities which can give the confidence to take up risky tasks. Otherwise, it will be just blabbering, The interviewers could see through such empty verbose. In the referred case the company officials would have been convinced about his possessing the needed requirements and as an extra, they saw his confidence and willingness to take up challenges. So they have him the chance and he proved himself. In an interview, it is that 'extra' which gives someone a better edge over the other candidates.