That pretty much says it all doesn't it? Also how does a cup of yogurt and 3.5oz of chicken breast = 61 grams of protein? LOL
That is technically true though. If we are talking need not optimal.
There were several powders that had low lead a few had near perfect levels.
There isn't anything to believe or not believe with the study, they just tested the powders and these are the findings, the samples were tested by a reputable source and it is in line with previous studies.
What that means, who knows.