That’s not really what the study shows. If you read the study it shows that the gap between the calculated and measured warming since the turn of the century is not due to systematic errors of the models, but because there are always random fluctuations in Earth’s climate. The study also showed that that the models do not generally overestimate human-made climate change and that global warming is therefore highly likely to reach critical proportions by the end of the century. The study also states, “The claim that climate models systematically overestimate global warming caused by rising greenhouse gas concentrations is wrong.”
Really, you should read the study itself, not some spinsters interpretation of it.