Both teams we played against were coming off a bye. In almost every other game we have looked much more like the undefeated team. However, in both cases both teams had plenty of time to prepare for us, leading to a closer game. BYU also historically does not come out of BYEs looking hot.
KU will not only not have a bye, but they will also be coming off a huge win (emotional) and will be traveling, so they will have at least 1 less day than us to prepare. I think people are reading way too much into the ISU win, similar to how they did with UCF