Considering that they were the same I’m gonna say those groups are wrong at least powertrain wise. The 6r80 wasn’t replaced by the ten speed until 17. Gen 2 3.5 ecoboost came out in 17 and the 5.0 got updated in 18.Most of the groups I belong to believe the opposite. SAt least from engine and reliability.
I guess the Uber reliable 3.7 was replaced by the 3.5 N/A in that transition but I don’t recall it being problematic either.