Not so sure about that as an absolute statement - perhaps true as a personal preference...
As traditional silk weavers we judge by many criteria and the dye, raw silk quality, weave quality etc is very similar for all those tie makers - very, very good. Occasionally there will be some quality differences but overall very good and very similar - from what I have seen.
Construction is another story and the Italian makers are better than Drakes.
David, I'm very interested in elaboration of the last point on construction. Would you say more?