An interesting point in this year's CFP:
1st round - all the home teams won.
2nd round - all those first round winners won again.
So, the 1st four seeds all lost their only game and all the 5-8 teams are 2-0.
I'm not sure this should be surprising, at least this season.
Starting with the first round. The 5-8 included the 2 SEC/B1G teams that lost in their CCG and Ohio St - who is considered to have the best team money could buy this season. The 5-8 teams were all playing home games against teams that had legitimately less talent overall. Based on their playoff rankings, rather than seeds, the matchups were
#3 vs #16, #4 vs #10, #5 vs #8 and #6 vs #7. Higher ranked team won every game. The only one that was remotely competitive was #3 vs #16.
In the 2nd round. 2 of the 4 bye teams were double digit underdogs (Boise St and AZ st) and never would have been in one of those seeds unless they went to a conference champ.
UGA didn't have its starting QB (though frankly ND was the better team anyways).
OR/OSU was the one game that on paper should have been close, but Ohio St has played at a different level than everyone else the first 2 rounds and likely was also extra motivated to beat OR since they lost to them in the regular season.
2nd round based on rankings
#1 vs #6 (#6 tOSU wins), #2 vs #5 (#5 wins, #2 without starting QB), #3 vs #12 (#3 wins in 2OT), #4 vs #9 (#4 wins).
Overall it has been an awfully chalky and pretty uninteresting playoff to this point. We are left with the #3-6 teams.
The #6 ranked team is the most talented team in the playoff and has been a buzzsaw so far. #2 team didn't have its starting QB.
Just looking at the rankings i'd argue there was a significant dropoff after the Top 6. #7 TN was overrated based on their schedule. I actually had them much lower (#17 in my final rankings - #5 SEC Team) based on their actual results. Their entire season basically rested on beating AL at home. They played one of the easiest schedules this season that included a mediocre FCS team, a 3-9 UTEP, a 0-12 Kent St and a 6-6 NCST. Their only win over a team with more than 7 regular season wins was AL.