Facing reality, we know that even if a so-called comparison is not sponsored by an anti-malware company, that company most likely provides advertising revenue to the organization conducting the tests. When reading the results of various testings conducted, the tests are always in a controlled environment and not necessarily following recommended removal methods by the vendor for the particular malware (i.e. scanning in safe mode).
Anyone who has spent any amount of time "on the forums" knows that no software, whether it be Anti-virus, -malware, or -trojan will work if the file(s) being removed are not in detection.
IMO, the real testing is done "in the field". I think we tend to see what works best for the types of infections encountered. When users write, "I've scanned with __________, _________ and __________ but still have a problem" and we repeatedly see the same entries in the logs, that "testing" is likely more illustrative of how well those software applications work in real world environments.