When you don't understand how a particular gun is intended to be used (or normally is used), and rate it poorly because you apply inappropriate criteria, you skew the results, do not provide any useful info for readers, make a fool of yourself in front of people who do know the gun, and leave people who don't know the gun with erroneous information & perspective.
When you don't understand how a gun works, don't know the terminology, and give out bad information regarding same, you make a fool of yourself in front of people who do know, and you have not positively enhanced the knowledge base of those who don't know.
When you use mismatched exemplars, apply the same criteria to both, and ding one for failing an arbitrary & inappropriate evaluation process, you again make a fool of yourself among those who know, and you have done nothing to help your readers learn anything useful.
When you base a "Best Buy" recommendation on utterly idiotic criteria, same same.
When you lie about where you get your exemplars from, that's an integrity issue.
And on it goes.
These comments are directed at the Gun Tests operation in general, and not confined to the article or author linked.
Just a long history of unqualified people who don't know what they're talking about.
Denis