Why did the Turks usually have military superiority over Christians in the 14th and 15th centuries?

Reasons: – Number, the Sultan could collect a huge army of up to 100 thousand people or more. – Artillery. The Turks quickly mastered the military novelties associated with gunpowder, because they were located at the intersection of trade routes (“The Great Silk Road”). – In Christian countries at that time there were no regular armies of recruits, they appeared from the end of the 16th century among Protestants (Netherlands) and further in Sweden, Austria, Prussia, Russia (1681 military reform and again under Peter I). – Almost all Christian states with which the Turks fought were rather weak – Byzantium, Trapenzuda Empire, Serbia, Bosnia, Albania, Greek principalities. Venice simply did not have a strong ground army.