At the moment it looks as though the Comparison feature does not work on the All Websites dashboard.
When going to the All Websites dashboard through the top menu it does not show an option to do a comparison when viewing the All Websites dashboard from here.
We can either remove this option from showing on the All Websites dashboard when navigating to it from the Site Selector, or we can implement the feature to work on the All Websites dashboard.
It should not show up in the date picker in all websites 👍 not sure if it's the case in other places too