This is the actual difference, and once you see it, you can't unsee it. Most conversation card games hand you 100 questions and shuffle. You either land on something surface-level and stay bored, or land on something brutal in round two and everyone shuts down.
Not Just Sundays is built in three progressive levels: Open, Uncover, Reveal.
You start with the easy, funny ones. The group laughs. Trust builds. By the time you hit Reveal, the deck has already done the awkward work of getting people comfortable. The depth happens automatically, not because someone forced it.
It's the only deck I've used where I didn't have to be the person who "took us deeper." The cards did that.