A: It depends on what you are looking for...
Sales Rep on Customer vs. Sales Rep on Invoice
2) Report Explorer's Sales and Commissions report shows similar information to the Sales and Commission Analysis cube, equivalent to using the Sales Rep on Customer dimension.
Reports: Sales and Commissions
3) Report Explorer's Commission Statement report shows the commissions paid to the agency and sales rep, based on the payment entry screen. This report uses the Sales Rep on Invoice since it captures who was actually paid these commissions.
Reports: Commission Statement, Agency Commission Statement, Sales R...
The first two will show the 2007 vs. 2008 comparison.