Do Some NFL Defenses Struggle Against Fast-Paced Offenses?

Not as a lasting trait. In 2025 the Jets allowed +1.01 more yards per play against the league's eight highest-play-count offenses than against everyone else (Cleveland +0.94, Green Bay +0.85) — but that 'struggles vs tempo' gap repeats year over year at just r = 0.15, which is noise. There's a measurement trap too: plays per game partly measures GOOD offenses, not just fast ones, so the split flatters the myth before you even test it.