Well Turkey does have a very credible powerful military, if you think Russia can 'easily' finish Turkey then i think you need to revise your knowledge about Turkey. Moreover Turkey is part of our NATO and we will be force to defend Turkey if Russia started a war against Turkey, not just because we want to, but simply because we have to. And we will all know how that will turn out for Russia in case it got into anu conflict with NATO.
However Russia might try and play the nuclear card since its conventional forces will be no match for an expeditionary war against NATO.
Anyway, i dont thnk this news is a credible news , will need to wait for more infos. even if it is, it will be more likely a failed state syrian fighter jet than Russia.