Why is Legendary difficulty different in Career Mode ???

I play Career Mode on Ultimate and the game is almost too easy tbh. As a CAM with Liverpool I'm scoring over a goal per game and find tackling to be a lot easier in Player career mode than Manager career by a wide margin. I don't even have a max out player yet and I put no stats into the defending tree. Manager Career mode I'll agree is harder but after a full season at legendary, scoring became a joke, defending becomes much easier when you utilize all of the controls and stop over committing when you don't have to. Posts like this always appear to be a skill issue to me.