Persia, being a nation that would "harass Russia and Turkey" might be the nation taking out Turkey alongside Russia in every game... Turkish armies are naturally extreme low-quality at the period so any power with more men would see it easy to take half of Turkey. This is why Persia and Montenegro do not quite fit into the mod with Warband's engine, though these nations never dared IRL to openly advance on Turkish fortresses, what is the chance that AI commanders will not?
In about 100 days of playing I believe it would mostly end up with Montenegro holding all Ottoman west Balkans, Russia holding all from there to Istambul and towards Ankara and Persia holding the rest of Turkey....
Wouldn't that be fun