I want to see a Day when a Malware SUE these AV-C labs while tests going on
How is a malware author going to sue an AV testing vendor? There's a legal procedure to it. They cannot stand up and say, "They did something bad, we do not like them, we wish to sue them".
Malware authors cannot testify in court unless they are helping provide evidence against someone else/have made a deal. They would expose themselves for their own crimes.
The last thing a malware author is going to do is get themselves locked up while trying to sue an innocent testing vendor.
You have to have a reason to file a lawsuit. Malware authors do not have a reason, even if they could do it.
Reverse engineering is legal in most areas depending on the cause, and it isn't illegal to do what AV testing vendors do.
About the tests here, they should also be taken with a grain of salt. All of them are "real world" because malicious software is real and people do get infected by downloading and running malware, be it a test from here or AV-C. Whether you want to agree with the test or not is down to you.