You're not missing much. You can generally use Cursor like Claude Code for normal day to day use. I prefer Cursor because I like reviewing changes in an IDE, and I like being able to switch to the current SOTA model.
Though for more automated work, one thing you miss with Cursor is sub agents. And then to a lesser extent skills (these are pretty easy to emulate in other tools). I'm sure it's only a matter of time though.
The big limitation is that you have to approve/disapprove at every step. With Cursor you can iterate on changes and it updates the diffs until you approve the whole batch.
Though for more automated work, one thing you miss with Cursor is sub agents. And then to a lesser extent skills (these are pretty easy to emulate in other tools). I'm sure it's only a matter of time though.