Microsoft Dynamics 365 vs SAP CRM

Hi! I am in sales, but this is a new IT-related field for me. I have a client meeting on Monday, 26th July, and I need to make a solid comparison between Microsoft Dynamics 365 CRM and SAP CRM. It is an enterprise client that operates in several industries. They are insisting on this comparison. Could someone PLEASE help with useful links, documents or comments. I have been exploring the web, but am only finding very basic stuff. There is a lot on ERPs, but not a lot on CRMs for these two companies. Thank you in advance!!!