The real value is in the wins.
Well if you beat Alabama in week 7, It is worth more marbles because they've won more games against power five opponents coming up to that game. As teams progress in the season they should get progressively better, and then beating them later in the season is worth more.
G5 teams have the opportunity by having power five teams on their schedule as well as beating other teams that have won against power five teams on their schedules. It still places a good emphasis on strength of schedule.