In my experience, the talks that I have enjoyed the most and found to be most productive, are the ones that directly tell me something. A 15 - 20 minute talk is not long enough to give a seminar, so no point reviewing other people's work, going to into minutiae of your work, etc. Just tell me why what you're doing is important, and what you did. In conferences, many people are tired and exhausted, don't force them to look at difficult to read tables. Pictures, pictures and more pictures! Do keep the tables, but only at the back, in case, someone insists on it.
Think of the conference talk as a trailer for your paper, make it as cool and accessible as possible. Don't try to cram a full seminar into a short talk, that leads to people talking about all sorts of things, except the most important part. They just rush to their results in the last minute or two, leaving everyone dissatisfied.