It makes judgments by choosing to report or not report on certain data points. There are also falacies involved like MPI/HPT==reliable. 2 identically manufactured parts will rate different on that chart. What data points would you have "The Chart" report that it doesn't? AFAIK it addresse...
Why no love for the Oly? I have two that have given me no issues and have shot with enought other ARs to know that they are just as accurate and reliable as other brands. My K8 shoots .5 moa pretty much all day with the load it likes. ;) The 45 ACP is nothing but fun. Eats the same loads as my 1911...
OMG! Olympic Arms is absolute bottom-of-the-barrel, and Del-Ton is only a tiny bit better (same crappy quality and cheap hardware but with better customer service). DPMS and Bushmaster are not exactly at the upper end of the quality scale either. Relative to cost-efficiency, one would be far better ...