Well... To be fair "absence of evidence is not evidence of absence", the study concluded that they couldn't prove there was a relation, but didn't proved there

Well... To be fair "absence of evidence is not evidence of absence", the study concluded that they couldn't prove there was a relation, but didn't proved there no such relation. In that regard, the study is inconclusive and the EU is right in not publishing it, lest the media take it to mean that piracy had no effect on sales.