If you work in eCommerce, this should be your new favourite free tool for competitor research.
This tool allows you to quickly develop your own Google Shopping Experience Scorecard and compare against top domains for your region.
The tool puts to work metrics that Google use as an input to rank stores within Organic Shopping results by uncovering the relevant datasets in quite a smart and effective way.
Another major benefit of the tool is that it includes its own score (out of 100) to show where a store rates overall. This is especially useful if you already have the Top Quality Store badge or are close to achieving it.
As an example, JB HI-FI appear to be very close to achieving the TQS badge at a score of 82, whereas Harvey Norman still has a lot of work to do with a score of 51, being quite far off from achieving the associated benefits.
For JB HI-FI, it appears as though there could be some room for improvement within the 'website quality' category. There will be clearer hints as to where the gaps are within the 'store quality' report in GMC Next, but it likely relates to comparative Core Web Vitals metrics, or something like PDP image resolution.
For Harvey Norman, there look to be some foundational aspects that are holding them back related to shipping, returns, and pricing not being competitive enough. This may be harder to influence, so they would likely look to improve their Seller Rating (which is quite low), and then first look to an aspect such as 'returns', which might be a more reasonable internal discussion to have to start – considering the industry benchmark is clearly 30-day returns for most items.
Oftentimes, sites will have some form of a returns policy in place, but it is not detailed (either intentionally or unintentionally) on their website. This is something that you can't skirt around, as Google validates this information itself through their Shopping Bot, with the information that is inputted within GMC Next needing to match up with what is detailed on the website.
Highly recommend bookmarking this free tool for safekeeping for a time when you want to complete a competitor analysis across core metrics within your segment. Link in the comments.