Only in your mind, The IPCC report, is a report issued by the UN designed to keep the alarms about climate change ringing,
it only represents what the editor's of the report allow through.
Here is an example from AR5 concerning a best estimate of ECS.
AR5 SPM
"
No best estimate for equilibrium climate sensitivity can now be given because of a lack of agreement on values across assessed lines of evidence and studies."
When in reality the scientist working on the report did report a best estimate of ECS, which they published as a Nature article.
otto
"
The most likely value of equilibrium climate sensitivity based on the energy budget of the most recent decade is 2.0 °C "
But they could not have the lead authors of the last IPCC report, reporting that the ECS from doubling the CO2 level would only be 2.0 °C,
So they made one of the most unscientific statements ever, that the model results disagreed with the observation's, and so no agreement could be found.
In science, if the model disagrees with the observation, the model is wrong!