I have stayed at both and here are my side by side comparisons:
theming: CSR has better in my opinion. Each section is just so beautiful. It is definitely more upscale looking than CBR, whcih was kind of blah to me.
Pool: CSR!!! Huge hot tub, long water slide, a pool bar with great food choices (you don't have to go inside to get food), playground, kiddie pool, sand area and arcade all together. CBR 's pool slide is short in comparison.
Rooms: CBR!!! CBR has lots of storage space and double sinks. CSR's rooms are fine, too, though and I liked the actual mugs in the room (not styrofoam cups) and hairdryers.
buses: CSR has less stops in the resort. CBR buses have more stops.
Food: I preferred the Pepper Market at CSR. I like the idea of eatign and then paying on my way out. I just don't prefer to stand in line with my food. The PM also has real silverware and cloth napkins.
Overall, CSR had more of what I like in a resort . I just felt a little more pampered than I did at CBR.