In fact, two different sources of data ( a survey of scientists and a study linking agreement to the credibility of the expert) converge on the same fact: 97 to 98 percent of climate scientists are convinced by the evidence for anthropogenic climate change.
That Allison had taken the anti-soda campaigners own data and used it to show how they were distorting the evidence was a blow not only to their academic credibility but to the intense lobbying these scientists were and are doing to get soda taxes enacted.