If The Hungry Lamb: Traveling in the Late Ming Dynasty generated the same gross revenue on the Epic Games Store, 零创游戏(ZerocreationGame) would keep approximately $11,811,488 - that's $2,347,152 more than on Steam.
At this revenue level, Epic's concrete platform fee would be $1,474,294. 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 $9,300,047.
Note: This is a hypothetical comparison. Actual sales volumes differ significantly between platforms, and Steam's larger user base typically drives substantially higher sales.