99% agree on the data in the WGI of the ARs because those are real scientific data. However, the interpretation published in the WGIII of each AR are decided by

99% agree on the data in the WGI of the ARs because those are real scientific data. However, the interpretation published in the WGIII of each AR are decided by politicians and are known to take liberties with the factual data in WGI, which is why 32k scientists signed "Climate Change Reconsidered".