NW, don't just drop one idea because someone else is doing it. If this type of game is what you want to do, think about ways of doing that may be unique. Though it may be difficult to think of something differentiates itself from EA's project, perhaps you can realize something deeper, that will make it much better and a much more valuable of an experience. Even adding a deep story into what seems like a shallow game might do worlds for it. But let me say, if you have a unique idea, and someone else confirms they have the same idea, you shouldn't just drop it, especially if you don't want to. Just work on doing what you think is best, and unless you're insane, like David Jaffe, it will probably work out after time.
Of course, if you were planning this game on the premise that it would be one-of-a-kind, just throw what I said out of the window, and brainstorm some other things.