Not an accurate statement. By default the game simmed your Career rounds letting you play the final few holes of a tournament.
However, there is a setting in the CM interface that you could disable the quick play feature and play every hole of every round in Career Mode. That is the first thing I changed when I began CM.
Agree that Career Mode was a grind in RM. Mostly due to lack of courses and other PGA TOUR specific content that TW14 had in spades.