Just need to point out this falls under the old adage, “lies, damn lies, and statistics.” You fail to account for the fact that while we are 15th in the country, we are stil 6th or 7th in the SEC while UGA is 2nd. How many of our losses are to teams with a lower average team talent compared to UGA? That’s an infinitely better gauge of underachieving based on recruiting.
Here is a list of average recruiting ranking over the last 10 cycles.
Ranking the Best Average Recruiting Classes over the Last Decade
By my count 36 of our losses came to teams with a higher average team talent ranking. This doesn’t include losses to teams like Oregon or Ole Miss who had more talented teams (by recruiting ranking the years we played them). Since only Bama is ahead of UGA, only 5 of their 31 losses have come to teams with a higher average talent ranking.
Putting that together, we have lost 26 games to teams with lower average talent rankings over the last 10 years compared to UGA’s 26. I’d say that’s pretty even. Sure they have almost double the number of wins that we do against “less talented” teams but the talent gap is much larger between them and their average opponent than it is between us and our average opponent.
"Average recruiting ranking" is not a static number over a 10 year period though, the talent on any given team fluctuates from year to year, that's why the 247 talent composite is the best measure to use for making the kind of comparisons you want to make, it takes into account transfers, dropouts, non-qualifiers, medical retirements, people removed for disciplinary reasons, etc. on a yearly basis.
For example, let's look at LSU over the last 4 seasons, and you'll see what I'm talking about, statistics are a source of "lies" when people don't compare apples to apples.
2017 (LSU's composite talent rank # 6, the composite ranking of all the other teams for that particular year are ranked below)
BYU, W, # 52
Chattanooga, W, NR
Miss State, L, # 25
Syracuse, W, # 62
Troy, L, # 116
Florida, W, # 17
Auburn, W, # 8
Ole Miss, W, # 18
Alabama, L, # 1
Arkansas, W, # 22
Tennessee, W, # 12
Texas A&M, W, # 15
Notre Dame, L, # 10
If you go by pure numbers, assuming for example that # 6 should always beat # 7 and so forth, which we all know it's never that simple, but assuming it is, LSU should have gone 12-1 against this schedule in 2017, but went 9-4.
2018 (LSU's composite talent rank # 7)
Miami, W, # 17
SE Louisiana, W, # 134
Auburn, W, # 14
Louisiana Tech, W
Ole Miss, W, # 22
Florida, L, # 12
Georgia, W, # 3
Mississippi State, W, # 23
Alabama, L, # 2
Arkansas, W, # 27
Rice, W, # 106
Texas A&M, L, # 16
UCF, W, # 56
If you go by pure numbers, which again, has flaws such as not taking into account home and away or differences in QB play, which can make a big difference among closely matched teams, LSU should have gone, 11-2 against this schedule, but went 10-3.
2019 (LSU's composite talent rank # 5)
Georgia Southern, W, # 102
Texas, W, # 7
NW State, W, NR
Vanderbilt, W, # 52
Utah State, W, # 97
Florida, W, # 15
Mississippi State, W, # 23
Auburn, W, # 13
Alabama, W, # 1
Ole Miss, W, # 25
Arkansas, W, # 26
Texas A&M, W, # 12
Georgia, W, # 3
Oklahoma, W, # 8
Clemson, W, # 9
Going strictly by numbers, LSU should have gone 13-2 against this slate, but went 15-0.
2020 (LSU's composite talent rank # 6)
Miss State, L, # 23
Vandy, W, # 54
Missouri, L, # 50
South Carolina, W, # 21
Auburn, L, # 14
Arkansas, W, # 25
Texas A&M, L, # 11
Alabama, L, # 2
Florida, W, # 7
Ole Miss, W, # 29
Going strictly by numbers, LSU should have gone 9-1 against this schedule but actually went 5-5.
So over a 4 year period, going by their talent composite numbers, LSU is underachieving by 6 games. I'm not breaking down Tennessee or Bama or Georgia or Florida at this time, but as you can see, teams fluctuate in talent from year to year, and if you break those teams or any others down this way, by talent composite, by year, going strictly by the rankings, that would be comparing apples to apples.