If MiSide generated the same gross revenue on the Epic Games Store, AIHASTO would keep approximately $32,203,703 - that's $5,359,638 more than on Steam.
At this revenue level, Epic's concrete platform fee would be $4,255,050. 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 $25,521,127.
Note: This is a hypothetical comparison. Actual sales volumes differ significantly between platforms, and Steam's larger user base typically drives substantially higher sales.