even your base (il55 class specific) gear is superior to the ones you can get in mor dhona(il70), the craftet il60 is far better if fully melded, i just give an example of the Body part:

..........................ilvl 55............il60............il70
cp.......................3...................3................2
controll................36.................39..............35
craftmanship.........108...............119............107

of course the craftet ilvl 55 and 60 have to be fully melded for that but as you can see even the standart il55 has 1 Point more in EVERY stat and the craftet ilvl60 has 1cp, 4 controll and 12 craftmanship more.

So the only reason to get the il70 Equipment is that it is rather cheap and that you can use it for all classes.