The Key: No long term effects were measured.
"There were no long-term studies of health outcomes of people consuming organic versus conventionally produced food; the duration of the studies involving human subjects ranged from two days to two years."
Revisit this study in 25 years and I guarantee you that will be a mountain of evidence to support the organic diet over the chemical-friendly one. Come on, you can't make sweeping conclusions like this after "two days to two years". This study is a joke.
Like the previous contributor said,
"Firstly, we'd need to know more about the trials Stanford studied. Trials which don't support their funders hypotheses are less likely to be published, so there might be a bias in the information available.