they're close enough that it doesn't really matter.  get the scratch, it's a better ski.  they're more durable, the topsheet on teh ar6 chips and peels like it's going out of style.  i like the flex pattern of the scratch much more as well.  they're more stable and a bit stiffer.  the ar6 is not a bad ski by any means, i just swear by the rossi.