high performance vehicles

last night on the way to megillah reading (for purim), jo, ethan and i were talking about big synagogues and the havurot we are involved in. jo argued that the number of people who are actively invovled any given synagogue isn't so different from the amount of people who are invovled in any given havurah and that the difference is the number of people who are not actively invovled.
trying to make sure i understood, i asked her whether she was saying that "the havurot and synagogues have similar engines, but they need to pull around a lot more car?"

perhaps that is why havurot have higher "performance"--same engine, less weight.