If SANABI generated the same gross revenue on the Epic Games Store, WONDER POTION would keep approximately $10,646,468 - that's $2,175,046 more than on Steam.
At this revenue level, Epic's concrete platform fee would be $1,315,428. 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 $8,373,327.
Note: This is a hypothetical comparison. Actual sales volumes differ significantly between platforms, and Steam's larger user base typically drives substantially higher sales.