There’s two of everything
In the video, Killjoy, Viper, and Phoenix are on a mission to stop a Spike from stealing their Radianite. Unsurprising to players, but very shocking for Phoenix, the person trying to steal the Radianite is another Phoenix. The Phoenix with Viper and Killjoy then asks a revealing question, “How come they look like us?”
Viper seems to know. And she implies that Brimstone knows a lot more. We aren’t told exactly what’s going on. However, from Phoenix’s question, we can write off a few theories. The agents aren’t clones. And the battle isn’t some kind of simulation.
In the next scene, we get a look at the other side. They don’t seem like the bad guys. But neither did the agents defusing the Spike. The final scene of the cinematic gives us the biggest clue to what is actually going on. It shows two Earths next to each other. That shouldn’t be taken literally, the two planets could be in alternate dimensions. But I think the shot indicates that the agents look the same because they’re different versions of each other.
Somehow the two Earths have created a bridge between each other and now they are battling over each other’s Radianite to continue to power their worlds. That’s my theory anyway. Here’s a slightly crazy theory, could the new Replication game mode indicate that there are actually many dimensions in the world of Valorant as the Duality title suggests? What could that mean for future game modes and storylines? https://www.pcinvasion.com/valorant-duality-lore-cinematic/