Syria is no match for Turkey
“Turkey will be hard pressed to go up against the 140,000 Kurd troops dug in around the contested area”
Between Assad, Russia and Iran; they can provide the kind of heavy anti-armor weapons that would make Turkey bleed heavily. Some artillery, some air support - soon it it is a real quagmire for Erdogan. He did not have to deal with that when capturing Afrin.
Everyone is done fighting ISIS now, and the Kurds and Assad’s alliance have all turned toward defending/liberating Syrian land from the Turks and their surrogates.
It is their war now.
Turkey has their own rebel cannon fodder to throw into this mess, and they can provide their fodder with air and artillery support.
Really, it remains to be seen who will commit sufficient forces. So far, it seems Turkey has the upper hand. If Syria is "all in", and Russia is willing to provide air cover, does Turkey have the stomach to fight and bleed enough to win?