S R Joe is right that quality is a multifaceted phenomenon.
given a choice of quality from near indestructable materials sorta slapped together, or marginal materials with excellent detailing and care in assembly, which might be better?
RVs are deserving of their notorious rep for inferior performance - witness the content of these forums.
there is a standard-bearer to hold accountable. RVIA. do they exist for you, for manufacturers, or for dealers?
i perceive they are looking for least responsibility/cost for builders, maximum business for dealers, and excessively high marketing to fool the buyer to believe otherwise.