not quite the same. Back then there was probably an appeal then an extradition case etc. etc.. Were they ever delivered to a Greek prison?
It has been suggested to me that there is now a european arrest warrant and a conviction in a EU member state is treated no different from a conviction in your home state. You will be delivered to the prison of their choice without having the chance of Government intervention or buying more time due to an extradition process being launched.
If that is the case on top of everything else here then this becomes even more scary.