LOL
https://www.pcgamer.com/ubisoft-explains-why-the-division-2-is-an-epic-games-store-exclusive/
Being on the Epic Store "really helped to actually do more of our business on our own store, and to have a better revenue per unit sold via the Epic deal," he said. "So altogether it's really helped us to go smoothly from Steam."
There's the 88/12 split, which puts Steam's 70/30 split to shame.
If for some reason people are actually buying the Epic Store version, that's a killer split (compared to Steam).
But, I think a good deal of people buy the Ubisoft Uplay-only version anyways, since it's normally cheaper more often (compared to Steam version; Ubi often has Steam version cost a bit more) and since that version's the one that's everywhere...at retail, digital distribution places, etc etc.
People are not happy w/ Epic's exclusive-crap antics of late (i.e. see Metro: Exodus fiasco), so it's possible people just bought the game over from Ubi - and that nets them the best splits and sale.
To get a Steam-version for an Ubi-game, you have to literally buy it through Steam directly; only way these days, since we don't have AmazonTony around to sway companies to suit our Steam wants and CAG wants. Other thing is: you're gonna use Ubi DRM anyways, so you don't really need Steam - you'll be using 2 clients (Steam and UPlay).
There's also the case that Ubi's so damn big anyways, they can get away w/ a stunt like this. Ubisoft is not Koch Media, not Deep Silver, and not 4A Studios - so, there's a good chance people might skip the Epic Store and just flat-out buy an UbiSoft version.
Metro series were mostly a Steam-success - as they were likely purchased, played, and bought titles over there. When Metro games came out and you wanted a Metro game - they were mostly on Steam-versions and keys you were getting...whether from Amazon DVG, Gamersgate, Razer Game Store, and/or anywhere else. Plus, that Metro series is quite a bit more niche than something like The Division.
On a side note, there doesn't seem to be much or any review-bombing of the Metro games on GOG...probably b/c their fanbase is mostly on Steam. Plus, to get a GOG version of an older Metro game (like Metro 2033 Redux or Metro LL Redux) - you'd have to buy it via GOG directly.
