Fans of both companies have spotted that there are two versions of this artwork doing the rounds, with one censoring various aspects related to the (ahem) female form (thanks, Event Hubs).
SNK appears to be favouring the "untouched" variant, while the censored version – found on the various digital store pages – grants Mai Shiranui's kunoichi dress a little more fabric, hiding her trademark cleavage.
Athena, a bikini-wearing goddess, has been cropped slightly to hide more of her skin.