In reply to
Yes, there are a ton of new areas...I would guess probably 1200-1500 routes difference between the two...
My guide has the Desfiladero de La Hermida which isn't available anywhere else and the latest crags in Leon and well as classic such as Poo de Cabrales which don't appear in Adrados.
It's also a lot easier to follow and has routes lengths.
I think if you want a sport climbing trip you will be much much better served.