Two heads is better than 1. 10 is way better. Even if they aren't a field of experts. You're bound to get random people that remember random stuff from high school, college, work, and life in general, allowing them to piece together a solution.
I would expect 10 random people to do better than a committee of 10 people because 10 people have 10 chances to get it right while a committee only has one. Even if the committee gets 10 guesses (which must be made simultaneously, not iteratively) it might not do better because people might go along with a wrong consensus rather than push for the answer they would have chosen independently.
Do you have a sense of what kind of task this benchmark includes? Are they more “general” such that random people would fare well or more specialized (ie something a STEM grad studied and isn’t common knowledge)?
I have failed the real ARC AGI :)