Feature summary (what you would like to be able to do and where):
When Client Hints data is displayed in CheckUser once T337942 is complete, a feature that allows CUs to compare Client Hints data between individual results lines would be useful to allow CUs to quickly see what does and does not match.

This may work similarly to https://en.wikipedia.org/wiki/User:GeneralNotability/InvestorGoat.js which allows comparison of user agents, however, that tool will likely stop working once the third-party resources policy is implemented (as it makes a API call to an external site).

Use case(s) (list the steps that you performed to discover that problem, and describe the actual underlying problem which you want to solve. Do not describe only a solution):
As a CU I run a check using Special:CheckUser 'Get edits' and find a results list with a couple of thousand lines. I want to be able to quickly find matching Client Hints data

Benefits (why should this be implemented?):
A CU should be able to select a given important action (such as a login) and then compare it to other actions made by other users such that if they share the same Client Hints data they may therefore be the same person.