There is really no comparison and it is not fair to put them in the same sentence, at least that is my experience. Depending on the results you are looking for will determine which procedure is better for you but I think that for scarring, wrinkles and skin tightening the new Fractional C02 is the way to go. Here are a few interesting links that will help you in making an informed decision.
http://www.smartxide.com/
http://www.realself.com/forum/active-fx-fraxel-repair-smart-xide
http://cosmeticdermatology.net
I would have to agree, there is no comparison between these two procedures. i had five treatments of fraxel laser and because of the lack of my results, the dermatology office i go to gave me 50% off of a fractional C02 laser procedure. I have to say that the results after one treatment of the Fractional C02 are astounding.
Just thought i would share.
Melody