It's a sad statistic but, to be fair: we have had a good defense. Almost every loss you look at when you have an elite defense, you are going to find that the offense didn't score a lot of points. Because for the most part, any time we scored more than however much, we'd win. That's the makeup of this team right now and so any loss you look at, with a few exceptions like TT '09, are going to be low-scoring games.
It would be most interesting to see the average score of the entire game on these losses. I think that's the only way to break it down.
The average score you have is 11.9 - 17.3. If you throw out the outlier in TT, it's 12.7-15. So most of these losses are just close, defensive struggles that point to what we already know: good defense.
If the average score were 10-30, that means: BAD defense with an offense that can't keep pace in a scoring contest.
If the average score were 30-35, then it would be bad defense with an offense that will make a shootout of anything.
The common denominator in the last two? Bad defense. So we've covered Bad D/Good O, Bad D/Bad O, and Good D/Bad O. What about Good D/Good O?
I don't think you will ever draw that conclusion by looking at statistics of losses. Because the average score of Good D/Good O would be something like 20-10.
Just an interesting thought here. Not sure it means much of anything. It would be better to look at all games but I won't argue that our losses have also been the games where the O has disappeared, instead of games where the D has disappeared, or games where both have disappeared (minus TT).