I think you were told a BS story by a santi sales person. The cheap method is to tape the seams... Santi does that too. Not sure why the temperature of the glue would matter.Basically, it was told to me at various diving shows (last time at Boot in dusseldorf) that Santi has developed a methold that manage to glue each section with a lower temperature glue instead of the traditional high temperature one used in the textile industry.
It is a more expensive process but on paper it should be a more resistant one: in my experience, it is!
As far as I know no other brand is using the same method: rofos, ursuit, and as far as I know neither DUI does.
The more expensive method is to seal the seams with stuff like aquasure like SF tech still does and other used to do.
When you say in your experience the seals are more restistant, what does that mean?