Diversion and Skynet run on my router.
https://d3ward.github.io/toolz/adblock.html I’ve been looking at the differences, using that test site, when, for example, I use Brave with shields up and down as well as other browsers. I’ve also had a play with selecting Adguard as the DNS server on the WAN page in the router GUI. (This page has changed sinced I last looked, now offering an easy-to-understand selection of DNS servers.)
After all this, it’s left me believing that the test at
https://d3ward.github.io/toolz/adblock.html is simulating the various scripts, trackers, ads on the assumption they would have made it through to your browser. So, in a way, it may be like the various safe scripts you can use to test if your anti-virus is working. So my suspicion is that it cannot test whether or not Diversion or Adguard is working on the router, but it can tell you how good Brave, or your browser add-ons are by simulating a variety of undesirables. So, I believe it tells you nothing about whether or not there are any defences blocking their progression through to the browser. In which case, you may perhaps be drawing the wrong conclusion after using this test?
However, I await the views of others on this. Going off at a slight tangent, I’m always hoping to find a DNS service that claims to block advertisements AND phishing, spam, malware and malicious domains. The list offered on the WAN page implies you need to choose between the 2; is there such a service?