I find the design of the AFCK to be much more appealing. It is sort of Persian Tactical. Very cool.
But in terms of ergonomics, I prefer the 710. It may not look as interesting as the AFCK (IMO), but I think it is "better" in terms of actual use (just because it feels better in-hand).
In terms of steel, blade shape, materials, fit and finish, and locks, they are either very similar or the same.
The 710 is available in M2, but they are both offered in great steels and it's just a matter of preference, though I think you'd be happy with any of the options.
The blade shapes are different, but both are very good utilitarian shapes that can do most anything. I do like the slight recurve on the 710, though.
They both have full liners and G-10 scales (which are both textured about the same- and I feel the G-10 feel on both is a bit lacking compared to the grippy feel of Spyderco's, Al Mar's, and Emerson's G-10).
They both have decent fit and finish. Good for the price, but far from perfect.
They both have Axis locks. But since I prefer to thumb-flick knives rather than to pull down the Axis bar and flick them with my wrist, I prefer opening the 710 as thumbstuds are easier to thumb-flick than thumbholes (for me at least).