It's said to be a game of inches...so it makes sense that 1or 2 plays/mistakes, etc will change the outcome of a game.
No team should let it get to that...but that's the case cuz of parity and great talent on every team..
.nearly every team.
But, that's why the NFL is the best sport....cuz any team CAN make the play-offs and even win the SB. All teams are supremely talented and the margin of error is so so small. That is great for fans who love competition.
.....just my take on it....
"L'audace, l'audace. Toujours l'audace!"