Notice that anything that isn't perfect score is unlikely to land in top50, much less top20.
In other news, as mentioned, the Tower Event page is gone, but it should be accessible if anyone digs up the eventID from the gamefiles or something. This has happened multiple times before (only on Nutaku as far as I know) and they have always fixed it a few days (or a few weeks) later. Everyone will get their Ranking rewards, just after a bit.
Well, this won't help anyone since I've been busy and there's only a few hours left of the final day of Tower, but here is my extremely rushed thingy for the later half.
No idea if I can actually do it, but oh well. I guess I'll find out.