Based on available digital footprints, here is the context for these terms:
High-definition or 4K visuals are standard for "extra quality" labels. This includes professional lighting setups that emphasize contrast and texture, which is crucial in niches where visual aesthetics are the primary draw.
: Often, this genre explores themes of exhibitionism and mild dominance. In many scenarios, the clothed women take on a superior or "in charge" role, while the naked man is in a more vulnerable position.