Board Thread:Off Topic/@comment-35711173-20180806030424/@comment-5643552-20180806034107

Delete Now is for stories that clearly fall below the QS (or violate a rule) and should be deleted pronto. Marked for Review is for stories that are of dubious or poor quality, but that you aren't quite sure should be deleted outright.

There is no hard line between the two. Just use your best judgment. The admins have the final call in both cases anyway.