Strength of schedule has some factor, but not the main factor.
My next to last year I coached at Washington, we wrestled a schedule that included cathedral, warren central, Avon, center Grove, Columbus east, reitz, jasper, heritage hills, and Gibson southern, and mt Vernon.
all those teams that year were either state ranked or participated in team state. I had 5 wrestlers in my lineup that had losing records heading into sectional. None of those kids advanced to regional, losing to kids from teams that most definitely didn’t have a better schedule than us. Sometimes a kid from a “lesser” team that’s 30-1 will just beat a kid that 20–15 that wrestled the tougher schedule. It happens.