I did watch Newton in 2018. What Turner did is he no longer had the offense go through Newton. Lots of check downs which is what increased his completion percentage and kept his picks low. Turner for sure is one of the best OCs at creating an offense that is functional and efficient.
And of course even with all that going, Newton took a terrible hit on a drop back that ruined his shoulder and the season was gone. So really, you are making my point for me. Even with a controlled offense that was highly efficient, Newton had a serious season ending injury. And let's be serious here - McDaniels is no Turner and our offense blows. We have no idea if Andrews will be healthy with the lung clots and Wynn has been pretty much a disaster with injury and Cannon is always injured too. And of course no Scar either which is the biggest downgrade to a team that has to keep Newton clean.