If Phoenix Wright: Ace Attorney Trilogy generated the same gross revenue on the Epic Games Store, CAPCOM Co., Ltd. would keep approximately $16,082,624 - that's $2,978,115 more than on Steam.
At this revenue level, Epic's concrete platform fee would be $2,056,721. 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 $12,697,542.
Note: This is a hypothetical comparison. Actual sales volumes differ significantly between platforms, and Steam's larger user base typically drives substantially higher sales.