How our site works is that we only index projects that are already being traded on exchanges and have been listed on coinmarketcap. So we don't list ICO's. This also results in the fact that those whitepapers will probably be a few months to a year old. Our Whitepaper of the Week is a paid promotion, so we don't pick the whitepapers ourselves (we obviously filter out the non-legit ones).
I see, thanks for the explanation. That would explain the time shift. It looks to me like a clever way to filter out questionable ICOs. There are too many shady projects with shady whitepapers, so letting time decide which ones are legit is probably the best. Besides, if the whitepaper is published in a peer review journal, it has to be a reputable one.