Hard choice, BF V is a work in progress and still having issues. Anthem hasn't even been released yet. Even if you're asking on a gameplay standpoint vs polish, content, or RTX support, it's really hard to say, especially since you said zero about gameplay preference.
This is true of most games regarding RTX support, because Nvidia released these GPU models on nothing but hype and a very misleading stage demo. It's worth noting though that Anthem still doesn't appear on any lists confirming RTX or even DLSS support. Since it uses the same engine but probably a different variant of it, that indicates only the devs know these details.
This is also why a lot of people refused to buy RTX and went with a high end 1000 series GPU, and why...