Perhaps just more verbose. I've noticed, though, that this discussion often suggests that people believe VZW or Motorola can simply "enhance" the network or phone to provide the dual functionality. The sad fact is that all design involves compromises (much like marriages) and Verizon decided a long time ago that the advantages of a CDMA network outweighed its disadvantages.
More importantly, they don't seem to realize that nobody cares. It's like arguing that a Fiero is better than a Corvette because it has more presets on the radio. ATT's entire marketing campaign is so horribly weak.AT&T has been bragging for months that their network which is GSM allows you to talk and use data at the same time, but tjhey don't tell you that their 3G coverage is about 10% of the US and fails constantly.