I can't speak for Italian tailors because I'm not conversant in that language to communicate with them, but the English tailors usually learn how to cut a coat/trousers in a very systematic and structured way, progressing through stages. Many cutters attended a school where they studied figurations and bespoke tailoring. I think one of the Dege guys (either Michael or his son) went to one such academy, as did Simon Cundey. At schools one'd expect that they are taught to approach issues in a more systematic fashion. After all, in order to teach smth, knowledge has to be codified. I was also told that if you focus on the use of manipulations, you'd tend to be somewhat more technical and systematic. Not sure if the Italians work with manipulations. Come to think of it, does anybody know if Italian cutters cut patterns for customers? I never inquired.
It's possible, though I'm not 100% certain, that many Italian tailors learn on the job and don't go to a tailoring college as such, which might also affect how they approach issues. Also possible that the nature of their apprenticeship (if they even have smth like that) is different. That and the different approach to tailoring between the Brits and Italians with the former's emphasis on creating a suit that attempts to emphasise classical proportions.
On a cultural note: Orderliness, discipline, rigidity, and a systematic approach to dealing with stuff (outside of tailoring) are also very much part of the English culture. School syllabi, the use of corporal punishment in schools, draconian and antiquated laws are all examples of this obsession with systematism and orderliness.