This is what you have to understand , luxury suit brands and bespoke tailors use premium fabric mills like Holland and Sherry , Loro Plana, Scabal or Zegna (Zegna makes their own high end fabrics). Usually these fabrics have a very high thread count (140 or higher). Southeast Asia isn't known for producing this level of fabric and craftsmanship.
Although I hear good things about suits coming out of there don't think they have reach the level of the west.
I'm going to be perfectly honest with you. I am a clothing reseller. I deal with the brands Loro Piana and Ermenegildo Zegna regularly and I hate to break it to you but their fabric quality is at the same level of any mid range brand. I have pieces from both lines in my inventory right now. The resell value and turn over isn't even that high on Zegna. Loro Piana sells like crazy but I have dealt with a ton of their cashmere and honest I find it to be on par with Eileen Fisher, Saks in house brands and Lauren Ralph Brands. It's really nothing special. I think you're buying the hype. The best textiles come out of India and that is where most designers get them from especially the Italians.