You definitely want the lower score in QR. I was accepted with a 13 in QR last cycle. My RC score was 23. The adcom said he could care less about scores in QR and mentioned that he's had students with low QR scores that have done exceptional on the NDBE exams and saw little reason to use that as a sole indicator of giving out interviews.
The main problem with QR on the DAT is that it requires speed, speed, speed and not necessarily whether you can actually solve the problem or not. The only way to get that speed is through repetition of thousands of problems, which certainly takes time away from preparation in PAT, sciences, and RC. Everything else on my DAT and application checked out, so I think that's why they weren't too worried about it.