HikaShop Feature Comparison

I am looking at the HikaShop Feature Comparison chart:
www.hikashop.com/extensions.html
and I can't understand the meaning of 1,2 or 3 stars in the columns for each version. I understand a checkmark or no checkmark. But some columns have 1 star, some have 2 and some have 3. What does it mean? Is it in some way related to the stars associated with each version of HikaShop as shown at the top of each column? What does it mean, for example, that Custom fields for products has 1 star in the Essential column and 2 stars in the Business column?

Hi,

The number of stars indicate that you can do more things with that feature with more stars.
If you hover on the title of the row, you'll see a tooltip with explanations on the differences for that feature between the different editions.