On a world-wide basis PC made a lot of money - nearly 500 million.
See here:
http://www.boxofficemojo.com/movies/?id=narnia2.htm
If they return to what Lewis wrote instead of tweaking it to substandard attempts to appeal to what they think an audience wants these days, they'll make huge bucks on VDT.
The next producer and the executive producers really need to read PLANET NARNIA by Michael Ward to realise what they are fooling with. That includes the adviser, Mr. Gresham. Also, all Narnia fans above 11th grade will benefit from the reading of this book. But be warned, it is not light reading. Still, after 35 years of reading TCN, I learned a lot from my first reading. I am re-reading it. It is that good.