Seems there is some confusion (or disagreement) how speed dial sync is handled, let me clarify how it works and why we decided to implement it this way.
The speed-dials you have in Opera Desktop is usually not the same as the ones you have for your Opera for Android device. We opted for a way to let users access their speed dials on any device without forcing you to have the same speed dials on each device.
So you can still access all your speed dials from all your devices, but this way it's possible for you to have device specific speed dials. You can still easily access speed dials from other devices by clicking the 'Other speed dials' button, and if you want to you can import from one device to another.