I did elaborate. Multiple variables include things like adjustments, mistakes, philosophy, etc. You're attributing that entire stat to, "the defense is gassed." It's too simplistic.
No, I mean make a connection between one of those variables and reality, like you were trying to do with your "up by two scores" theory. E
laboration involves labor of some kind. All you're doing here is listing some suggestions of where to start. Pick one and start. Build a case. You might actually find something that supports your opinion that the 4th-quarter defensive collapse isn't mostly attributable to the fact that young defenses that rely on speed and don't have much depth get tired from flying to the ball for three quarters.
When
leading by at least two scores in the 4th quarter, Dallas faced 14 drives and allowed 5 touchdowns. That's 35.7% of opponents' drives that resulted in a TD, which ranked 20th among defenses with two-score+ leads in the 4th. On all its
other 4th-quarter drives (meaning when trailing, tied, or leading by less than two scores), including OT drives, Dallas faced 37 drives and allowed 11 TD (29.7%). That ranked 27th, so the Dallas defense was even worse relative to the league when
not up by at least two scores late. In other words, the late-game collapses were real, not a statistical mirage produced by garbage time scores.
In fact, when the game was tied or the margin was one score or less either way in the 4th or OT, the Cowboys gave up 9 TD on 30 drives (30.0%) to rank 25th. Even omitting the NYG game in week 17, when the margin was 8 points or less in the 4th quarter or OT, Dallas ranked 21st in TD% allowed, compared to 4th over the first three quarters of the game.
By quarter, here's Dallas' rank in TD% allowed for weeks 1-16, on drives when the margin was 8 points or less:
1st qtr 1st
2nd qtr 17th
3rd qtr 8th
4th qtr 21st
Here are all games including playoffs, regardless of point margin:
1st qtr 1st
2nd qtr 11th
3rd qtr 12th
4th qtr 28th
If adjustments played a big role, then our halftime adjustments were light years ahead of our in-half adjustments. I don't think it was mainly about adjustments as much as it was tired defenders.