As a Titans fan I can absolutely say it was QB dependent
Mariota was god awful breh
First 6 games of 2019 (Mariota starting) Henry had 416 yards and averaged 3.68 ypc
Last 10 of 2019 Henry had 1124 and averaged 5.91 YPC.
That large of a difference didn’t happen in a vacuum because the OL and Henry just naturally got better all of a sudden.
The only difference was Tannehill.
Imma die on this hill only because I’ve seen every single game. We only know how great Derrick Henry is, because of Ryan Tannehill. That doesn’t mean Derrick Henry didn’t also uplevel Tannehill, but that change doesn’t happen with a QB who can’t throw like Mariota