It’s not unusual for the difference between those scores to be zero on the raw score. The SAT is scored on a curve. If you happen to take it with a bunch of other strong testers, your score will be lower. Schools know this. My son is a good example. He made a careless mistake (he know that because it was in the easiest category 
) on the math section and missed a single answer. It pushed him down to 760. In the old format, getting one answer wrong on math could result in a score anywhere between 760 and 800. He just took it with a bunch of other stron math students so that mistake hurt more. On another day it would have been an 800.