here's the pricing info: "Direct checkout will cost a 3% + $0.25 USD payment processing fee per sale."
It's nearly impossible since their processing fees on some card types will be over 3%. They're already taking a loss on those transactions; most will be under 3% to balance it out, but not enough that they could offer better pricing than everyone else.
They're not going to be able to negotiate barely-above-interchange rates like PayPal probably gets from its banks with billions of transactions in monthly volume. Visa's interchange fee to the bank is still as high as 2.7% on some cards, which is the floor upon which the processor can set its markup to the merchant like Etsy.