The overview shows the historical crawling data, it used to be stable and helps you to discover how our competitors are increasing or decreasing their catalog. But sometimes, a big movement in the assortment may be a specific crawling problem, so you have to see the general trend and not the data of a single day.
Weekly products count
Just below the chart you can see the product count of your competitors regarding your Top10 brands, for a specific product group, category or collection.