If Long Live The Queen generated the same gross revenue on the Epic Games Store, Hanako Games would keep approximately $1,808,951 - that's $465,467 more than on Steam.
At this revenue level, Epic's concrete platform fee would be $110,312. 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 $1,343,484.
Note: This is a hypothetical comparison. Actual sales volumes differ significantly between platforms, and Steam's larger user base typically drives substantially higher sales.