The sample policy analyses

Looking at the sample policy analyses (two political/advocacy, one scientific, and one professional) and share what do you see as the primary differences in the nature of the information presented? What stands out to you that is not necessarily the specific information presented, but about the way the information is presented?

Example of Scientific sample policy: https://www.biologicaldiversity.org/campaigns/fracking/pdfs/Colborn_2011_Natural_Gas_from_a_public_health_perspective.pdfExample of Professional sample policy: https://www.brookings.edu/wp-content/uploads/2016/07/2015a_hausman.pdf