Under some products you will see the notation to see on x number of styles, under some you will read see on x number of products. (See the examples below - click photo to enlarge)
The first is what the store page looks like now.
The second is the page you see when you click - see on x number of styles. It shows the different styles of the same product, in this case t-shirts.
The third photo is what you would see if you click on - see on x number of products. It will reveal the products that carry the same design.