I know that this guarantees nothing, but Alabama's SOS is so much better than Clemson's that the two are not even comparable. Alabama still has to execute, but the reality is that Alabama has a much broader advantage than the stats show because of the difference in the level of the teams that those stats were produced against.
Check out the numbers here:
https://www.footballoutsiders.com/stats/fei
Alabama's PSOS is ranked #20 while Clemson's is ranked #101.
The great thing about these ratings is that they are calculated on non-garbage time play only, and they remove FCS opponents. In other words, this represents how the teams played against opponents when the game was in doubt.