Jasaon and Brooke fall into the same spot for me, so I think one of them will be missing from the final 4.
You are right, they are both talented in the same way.
I think we should try to predict what songs these guys will pick to sing next week. I would say that the best song for Jason would be "Here There and Everywhere". It really fits his soft spoken voice and it is an excellent song to sing with an acoustic guitar. (But I think he really needs to invest in a better guitar. The one he plays now sounds kinda weak and tinny. I suspect that "Taylor" would gladly ship him a nice dreadnought if he promises to point the headstock at the camera a few times during the performance).
I think Brooke may actually take a stab at "Yesterday." I think she could pull it off. Its a very emotional song and she emits emotion better than anyone else in the competition.