If SUPERHOT VR generated the same gross revenue on the Epic Games Store, SUPERHOT Team would keep approximately $6,408,130 - that's $1,406,209 more than on Steam.
At this revenue level, Epic's concrete platform fee would be $737,472. 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 $5,001,922.
Note: This is a hypothetical comparison. Actual sales volumes differ significantly between platforms, and Steam's larger user base typically drives substantially higher sales.