Turner got dominated again against Embiid.
That's the thing about the PF/C positions nowadays in the NBA. There are about 6-7, maybe 8 big men (PF/C) in the league who dominate. So for all the flack we give a guy like Tristan Thompson, and for all the talk about Myles Turner and other guys alike, it's not like these guys are expected to actually outduel the likes of Jokic, Embiid, AD, etc. in games.
There's a reason Ainge got KG back in 2007-2008, and wanted to get AD recently.
Myles Turner is still a nice player. Embiid is just way better. There really aren't many "answers" you can throw at some of these star bigs. I'll give him credit, Embiid has improved and it seems his conditioning is better too. He doesn't look as tired even late in games and he's having an MVP-Caliber season.