Maxperson
Morkus from Orkus
It's the same difference. If I've pre-determined something, it's established fiction, just like if you've come up with some piece of fiction on the fly and established it. So we're both starting from the same point. Established fiction. Now the players make declarations of actions or the equivalent. Happens in both styles of games. We're still paralleling. Now, the DM comes with an extrapolation based on the established fiction and the players actions and comes up with a result(fictional element).No. There is an obvious difference between a GM extrapolating from his/her notes to create more "virtual" notes and a player extrapolating from the established fiction at the table to posit a new fictional element. As @innerdude already posted.
The method is different, but the result seems anywhere from similar to the same to me.