It matters little that the Falcon was slightly quicker, had better sound capabilities and a DSP.
When the A1200 cost £399 and the Falcon cost a whopping £999 when they launched in the UK. Even if you add in a Blizzard 1230/50 + some fast RAM, and a small HDD, the A1200 would still have come out cheaper by a few quid.
So IMO, in terms of cost versus performance the A1200 is the better machine.