A difficult choice. Both carry pros and cons. It all comes down to what they are planning on doing. In all honesty, I doubt CBS will go through with both at the same time. Despite green lights and confirmations, they can STILL delay a project, It doesn't make sense to release both at the same time because if one doesn't do well, the popularity of the other will be knocked too.
I guess I don't really mind which one gets released. If its done right (Which hardly ever happens), it will work either way. But in terms of jumping on board the supportive express, I will consider boarding it when it arrives at the station.