OK.... I read FAQ.....
http://akozumpl.github.io/dnf/user_faq.html#why-do-i-get-different-results-w...
And the one following it.... "Is it possible to force DNF to get the latest metadata on dnf upgrade?"
Running KDE and the notifications in the systray showed there are 12 updates available. Figured I give dnf a try, which I've done from time to time, but it showed no packages to update. OK....so clean metadata for both yum and dnf....
ran both "yum check-update" and "dnf check-update".
yum listed the 12
[root@meimei ~]# dnf check-update google-earth 74 kB/s | 4.8 kB 00:00 Fedora 20 - x86_64 - VirtualBox 38 kB/s | 44 kB 00:01 Fedora 20 - x86_64 2.2 MB/s | 36 MB 00:15 RPM Fusion for Fedora 20 - Free - Updates 241 kB/s | 346 kB 00:01 Adobe Systems Incorporated 2.7 kB/s | 1.8 kB 00:00 RPM Fusion for Fedora 20 - Nonfree - Updates 116 kB/s | 100 kB 00:00 RPM Fusion for Fedora 20 - Free 325 kB/s | 487 kB 00:01 Fedora 20 - x86_64 - Updates 2.0 MB/s | 23 MB 00:11 RPM Fusion for Fedora 20 - Nonfree 19 kB/s | 289 kB 00:15 [root@meimei ~]#