Besides theming, I can think of a few big differences between the 2 resorts. CSR has a large pool area, with a large pool slide. POFQ has a small pool area with a small slide. POFQ has only a food court, while CSR has both a food court and a sit down restaurant. POFQ is a relatively small resort, while CSR is large. CSR does have an internal shuttle service, just in case you end up out in the boonies. But at POFQ you can catch a boat to Downtown Disney, which is much faster than waiting for a bus.
Which resort are you leaning towards?