The three torrents I show you seeing have no leechers that is why you have no upload speed on them. In order to seed/show upload speed someone else must want the file and must be connected to the person wishing to seed the file.
The person who is seeding the file is also fighting with all the other people who are wishing to seed the file for connectable leechers.
The less seeders and the more leechers a torrent has and the better you internet connection the greater possibility of you being able to connect to leecher and show upload speed.
Oh I see. So I guess a torrent with a higher leech/seed ration will start uploading data?
You have a higher possibility to upload with fewer seeders. The many thing is to make sure you are connectable and easier for other torrent clients to reach.