About the biggest differences i see are 1), it is not reversable.. That unit looks like it is only designed to be towed . many of the modern dirt scoops are reversible, so you can use as a self loading 'pan' while driving, or you can face them backwards and back into a pile.. this is accomplished by a double top frame and 2 sets of pins... and 2), the front lip doesn't appear to have a reinforced cutting edge like my KK unit has.. etc.
otherwise.. if you are using it as a pull to load setup.. it should function nearly the same. Dump/release is by a slightly different scheme than the trip lever dump that KK used.. etc... but that does not effect function that much.
( I prefer backing into piles.. so i like the reversable ones.. etc. ).. however from a collectors point of view.. I might get it to go with my older tractor.. etc..
soundguy