In certain situations I believe this to be a good thing. I'm not worried at all that a certain battle may favor one or the other a bit. That, to me, is actually a good thing because it shows that they all have good tools but they aren't all the same. I was talking more so about X is supposed to be good at one thing, Y is supposed to be good at another, but X is still better at Y's job than Y is, so no one want to take Y in a group. All in all, though, I pretty much agree with what you're saying.