My two biggest takeaways about the Dolphins are, they need Hill AND Waddle for Tua and the team to be successful, and the second is, even with DC Fangio, Ramsey, and other pieces on defense they really can't stop good teams. Most of them have been able to easily put up 30+ on them, and sometimes by halftime.
This isn't a Tua-Mac comparison or saying that Tua is bad, but yeah, it's obvious Tyreek Hill is the MVP of that team and probably the league. It's night-and-day. Tua benefits from having elite weapons kind of like Purdy, and a system with creative offense and elite offensive coaches