I am trying to understand the features and additional functionalities offered by SAP in IS-Auto variant from Production planning and control perspective. I am gone through the release notes but don't see much additions apart from JIT.
Any suggestions ?
check below sap help file link , you may find few more enhancements related to IS auto
SAP Library - SAP for Automotive
Also specify what's basis of your comparison between this two?
SAP PP is a just module in ECC, and within ECC you have option to use PP module for many different business processes including process industry too & IS-Auto is whole Box design only for Auto.