Apparently Citi Driver's Edge has been discontinued... I was gonna apply for it in August ... oh well
My merchant services account is with BoA. When we process a credit card, the rate (discount) we pay varies by not only card type (Visa, MC, Amex, Discover) but also by sub-type (debit, credit, reward, etc). A Visa/MC reward type card we may pay as high as 3% discount.
So, these 2% reward cards seem to be getting a big chunk of the discount I pay. Not sure if everyone pays the same, but when I look at our discount schedule for merchant services, the list and rates is pretty big and extensive and categorizes card type fairly specifically with rates varying among those types.
Credit Scoring 101 - Tuscani * Guide to Common Abbreviations
Frequently Requested Threads * FICO High Achievers * FICO Score Estimator