Stories are easier to remember. My guess is that you already know that intuitively, but you might be surprised by how much. What do you think? Twice as memorable? Three times?
I’ve seen estimates as high as 22x more memorable, but prefer to work with results I can verify. In the epilogue of Made To Stick, Chip and Dan Heath describe a Stanford Class that demonstrates a 1,200% increase in recall when stories are used. That’s good enough for me.