objc NSDictionary literals vs c-style switch

gistfile1.m

NSInteger sourceIntValue;
id mappedValue = (@{@(kSomeConstValue1): KSomeConstMappedValue1,
		    @(kSomeConstValue2): KSomeConstMappedValue2}[@(sourceIntValue)])?:KSomeConstMappedDefaultValue;
					          

//VS

id mappedValue;
switch(sourceIntValue) {
  case kSomeConstValue1:
    mappedValue = KSomeConstMappedValue1;
    break;
  case kSomeConstValue2:
    mappedValue = KSomeConstMappedValue2;
    break;
  default:
    mappedValue = KSomeConstMappedDefaultValue;
}