The average number of research experiences seems to be trending upwards sharply. Are people listing posters/talks that they were 5th or 6th author on? If I include all the research experiences that I'm a co-author on then have ~25 research items. If it's only publications (including both primary and contributing authorships) and talks/posters I've been primary author on then I'm only around 10.
I wouldn't read too much into it. From personal experience i can think of multiple people this year who matched very well with way below those numbers (some with zero publications). In most cases quality > quantity. And you have to remember there's a massive positive skew with PhD's and others who have 40+ pubs.
I'd say most people have 2 or 3 solid publications, either first author or very heavily involved, and then multiple presentations/posters. If you're around there you're about average.
PhD's definitely don't contribute to the positive skew. Even one solid first author basic science publication is considered a success.
What if you have primarily a basic science research background but are not a PhD?