From email correspondence:

"...As we run multiple events each month the income report is useful but only gives the total income for each even whereas the payment report is separated into the various payment types (ie. Cash, check, paypal, etc). having the income report include the various payment types (ie. Cash, check, paypal, etc) would be helpful to reconcile with paypal and our accounting of offline payments. Right now we have to look up the offline payments and minus them form the income total to get the online payment by event or download each event into excel and delete offline payments..."