Dear Mr. Jean-Patrick,
First of all I apologize for the late reply, it was not intentional. 
I understand the concern very well. I only add the planned tracks if a CED (Environmental Impact Assessment) had been done, which means the project has reached a certain mark, and is also my source for the coordinates (assumed under public domain as it is a document published by the government, like the Official Gazette). The variant at Isparta/Burdur is because the project is designed as such, having two stops to cover both cities, not because of an ambiguity about the route. It is the determined, exact route within around 500m margin of error; and will be that way unless something unforeseen during planning or construction had happened (admittedly, this happens a lot in Turkey).

Kind regards,
Ahmet