I'm curious as to what part of the assertion that cannon superiority was one of the biggest factors in the Fall of the City is being debated, can you provide so

I'm curious as to what part of the assertion that cannon superiority was one of the biggest factors in the Fall of the City is being debated, can you provide some resources? The bombards (muzzle loaded cannons) were widely known and used in Europe, e.g. the famous Mons Meg (https://en.wikipedia.org/wiki/Mons_Meg); https://en.wikipedia.org/wiki/Mons_Meg); what distinguishes the cannons that Mehmet had Orban built (https://en.wikipedia.org/wiki/Orban https://en.wikipedia.org/wiki/Orban) were their sheer size and the technological knowledge in casting such massive bronze bombards, that Western Europe lacked at that time. For an informal description of Orban's work see http://www.camrea.org/2017/09/11/orban-the-man-who-brought-down-the-walls-of-constantinople-part-i/ http://www.camrea.org/2017/09/11/orban-the-man-who-brought-d... Note that just having this massive cannon did not make it a done deal: due to overheating, the bombard had to be cooled for a long period after each shot in which time the Byzantine defenders quickly mended the walls with rubble and any other materials they could find. In the end they just got overwhelmed.