If you are setting the bar high, expect that people around you has great achievements, and what you need to do is to keep up. If they do not have, biggest rule is not to look down, and instead, bring them to your level, and be patient if you are sensing dishonesty.
But let me tell you the truth:
Everyone has set of expertise and flaws. Even if they have or do not have a great profile, that doesn’t mean they are right nor wrong respectively. You know that language in each individual are not the same. What they know might hide in a form of different words. You just need to ask the right questions that are clear to all involved parties. As your task is to seek the answers that make sense to your questions.