I believe that there are many factors which will render our communities as outliers in this pandemic. The first, and biggest, factor is our community life. A BP family with 8 kids can realistically interact with 2 yeshivos, a girls high school, 2 elementary schools, and a playgroup all within 24 hours, in addition to up to 3 shuls and a large simcha. Assuming very modest average numbers of 100 kids per school, 30 per shul, and 150 per simcha, that family has interacted with almost 750 people (giving overlap) within their average 24 hour period. I think you'd be hard pressed to find that reach in the outside world. Multiply that by "x" amount of families, add in Purim, and the government not taking it seriously enough until after a large percentage of our population was infected, and I think you may need to find a different Chol HaMoed project.
Another data point that will skew the Jewish community's numbers vs the rest of the world is the elderly population. The interaction we have with our elderly in community and home settings, IMO is far greater than the average population. The amount of deaths we've seen from our greatest generation (75+) is unfortunately a huge percentage of our overall Covid-19 fatalities.