If THE KING OF FIGHTERS 2002 UNLIMITED MATCH generated the same gross revenue on the Epic Games Store, SNK CORPORATION, Code Mystics would keep approximately $1,872,007 - that's $478,365 more than on Steam.
At this revenue level, Epic's concrete platform fee would be $118,910. Epic charges 0% on the first $1 million in annual per-app revenue and then 12% on the remaining amount. On GOG (30% cut), the developer would earn approximately $1,393,642.
Note: This is a hypothetical comparison. Actual sales volumes differ significantly between platforms, and Steam's larger user base typically drives substantially higher sales.