1. Maturity: Cronson fully matured in North China on September 20, with fast coloring and good uniformity, which is convenient for centralized listing. Crenson grapes, on the other hand, ripened relatively late, even in June 10. This means that Cronson grapes ripen earlier than crenson grapes.

2. Disease resistance: Cronson is a relatively regular virus-free variety, so its seedlings are virus-free, with good disease resistance and wide leaves, and can be cultivated in various soils. In contrast, crenson's disease resistance and adaptability are not as good as Karen's.

3. Fruit quality: crenson's fruits are slow in coloring, poor in uniformity, poor in hardness and taste. Cronson's fruit has the characteristics of fast coloring, good uniformity and sweet taste.

4. Origin: Cronson is widely planted in North China and crenson is mainly planted in South China.

5. Usage: Cronson grape is often used for wine making because of its good quality and taste. On the other hand, Crenson grapes are often used to make dried fruits or processed into juice because of their late ripening characteristics.