> Using heroic and wine is so seamless that I don't even remember if I have been running a game natively or not. It just works.

If you're using Heroic on Linux, then there's no question whether you're running games natively or not. You are running a Windows game in WINE (or Proton, a WINE fork). Epic Store doesn't carry any Linux native games (even when a native Linux version exists).

Supposedly their native version is more optimized, but yeah, it runs well otherwise.