Ottoman-Safavid rivalry was itself a Turkic rivalry, based on Sunni-Shia conflict. In fact, Safavids had retained a more Turkic culture compared to Ottomans. Look at titles of Safavids, Khan, Beglerbegi, Qorchu, Yasavul. Eshik Aghasibashi, Chalchibashi, Kanuqibashi etc...
For instance the Safavid army that met Ottoman army at Battle of Chaldiran was more Turkic, a large part of Ottoman army consisted of non-Turks (Janissaries) while all of Safavid army was Turkic.
Shah Ismail wrote a letter to Sultan Selim Yavuz in Azeri before Battle of Chaldiran, it still survives to this day in Istanbul;
"Mən pirimi haqq bilirəm,
Yoluna qurban olaram,
Dün doğuldum bugün ölləm,
Ölən gəlsin budur meydan!"
For instance the Safavid army that met Ottoman army at Battle of Chaldiran was more Turkic, a large part of Ottoman army consisted of non-Turks (Janissaries) while all of Safavid army was Turkic.
Shah Ismail wrote a letter to Sultan Selim Yavuz in Azeri before Battle of Chaldiran, it still survives to this day in Istanbul;
"Mən pirimi haqq bilirəm,
Yoluna qurban olaram,
Dün doğuldum bugün ölləm,
Ölən gəlsin budur meydan!"