This ranking is based on a blend of "projected quality and competitiveness." The spread in those games (Texas-Florida/Arkansas) is projected to be high, thus making the games less "watchable" (according to this ranking).
The spread factor is the same reason that aggy is on the list 6 times, including games against Auburn, Florida, and Missouri. aggy will be mediocre and those three teams will also be mediocre, so the spread in those games is projected to be low.
The list doesn't suggest that aggy will be playing in a lot of huge games, just that they are in the middle of the pack and will be playing other teams around the middle or above them in the rankings. Thus those games are ranked as "watchable," despite being matchups of average teams.
Similarly, the "projected quality" factor is why Texas appears four times in the top-10 while most of aggy's appearance are on the bottom half of the list.