To a point I think the other guy is actually correct, let me explain…
Are the bricks any different between the two builds ?
Is there a better quality cement used ?
How about the glass windows and doors ?
The joinery ? Wall and floor tiles ? Paint ?
Im sure you’re getting the point.
Most of what we call defects are actually labor faults not material faults, which I think may have been the point of the poster you replied to.
Im a ceramic tiler in Oz and 99% of tiling work is carried out using close to the cheapest adhesive on the market (relative to purpose, ie swimming pool or kitchen splashback etc)