The phrase "point gap" refers to the difference or distance between two points. It is used to describe the space or interval between them. Full definition
42 - percentage point gap over the issue of using animals in research — 89 % of scientists favor it, while 47 % of the public backs the idea. (sciencedaily.com)
33 - percentage point gap on the question about whether humans have evolved over time — 98 % of scientists say we have, compared with 65 % of the public. (sciencedaily.com)
Don't forget a 12 point gap with city means they have to lose 4 times while we win 4 times to catch up to them. (justarsenal.com)