>Having a similar premise is not good grounds for a legal dispute.
>The trademarking of those faction names is likely not a thing, due to how they contain real world nations and organizations, read European Union and Russia. Good luck submitting a trademark or legal dispute on that.
>Even if those two prior reasons were a factor, the games are in two seperate sections of the FPS market. One being an Arena F2P game, the other being a game in the style of Battlefield that you purchase, and thus are not in direct competition.
Hope that settles that.