I have played against and played with both the Falcon and the Firespray and I am either not very good with them (might be the case) or are they under-powered for the points cost you pay for them?
In most cases I can get 2-3 good fighters for the price of one large ship, yet the return on investment for the big ship seems lacking.
I think it's a firepower thing, they can take a lot of punishment, but 3 dice from the Falcon variants and 4 dice to the front only on the Firespray seem weak compared to 3 dice X-Wings and 3 dice Interceptors or even 4 ties with 2 dice each.
This would be less problematic if they could defend themselves better, but it's pretty easy to knock down shields and hull when you get 1/2 def dice and no real way to buff that.
Just a question I've been mulling over.