How about a table of questions? 😂
But seriously, both work for me but not in the same way and for the same reasons. Questions are great when I want to expand on the world with my (and everyone's) imagination. They ensure that the game has bits we like, but we'll never be really surprised by every they bring to the fiction.
Tables bring ideas from the designer to the table, even if we adapt and interpret the result. They contain more _stuff_ than questions can (especially if you read all the entries and not just the results you roll). As Yukiko says, they're high potential gameable content (to translate roughly).
Hey, I think I just convinced myself that tables are better 😅