There's not precise comparison, but with Ethereum you could have different classes of payments backed by different types of contract which the end user could ch

There's not precise comparison, but with Ethereum you could have different classes of payments backed by different types of contract which the end user could choose from when purchasing. E.g. - For small payments, or to trusted suppliers, no chargebacks - For large one-time transactions, funds held in escrow for a given period - For long term transactions, funds are committed but only accessed over time etc. Perhaps there won't be any chargebacks as we know them available in ethereum, but if you want to pay extra 1-2% as part of your payment to offset the risk (which is basically what you're doing now with credit cards, but enforced), that could be an option.