With Category Benchmark, you can now evaluate your Sponsored Brands performance relative to your peers in each of your categories and subcategories. You can track your Impression Share, click-through rate (CTR), return on ad spend (ROAS), and advertising cost of sales (ACOS). For each metric, Amazon will show the top 25%, median 50% and bottom 25% compared to yours with a 90 day look-back period.
In this video, I discussed why this is important—metrics, charts, and filters.