If Resident Evil 4 generated the same gross revenue on the Epic Games Store, CAPCOM Co., Ltd. would keep approximately $120,066,468 - that's $14,024,224 more than on Steam.
At this revenue level, Epic's concrete platform fee would be $16,236,337. 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 $95,411,963.
Note: This is a hypothetical comparison. Actual sales volumes differ significantly between platforms, and Steam's larger user base typically drives substantially higher sales.