What is the main factor influencing the quality of wine classified as "superior"?

The main factor influencing the quality of wine classified as "superior" is the complexity and richness of flavor. Superior wines are typically characterized by a depth of flavor, a harmonious balance of acidity, sweetness, tannins, and distinct aromas. This complexity is a result of various factors, including the terroir, grape variety, and the winemaking process.

While vintage designation can indicate the year when the grapes were harvested and can suggest differences in quality due to varying weather conditions, it alone cannot determine the wine's superior standing if the flavor profile does not exhibit complexity. The type of bottle used is more related to presentation and preservation rather than directly affecting the wine's inherent quality or flavors. Though a winemaker's experience can certainly contribute to the production of high-quality wine, it doesn't guarantee that the wine will possess the complex flavors that define a superior classification. Ultimately, it is the multi-dimensional flavor experience that elevates a wine's status.