i own both, here's my take ...
neither of these bows are in the same category as an american flat longbow ("howard hill style") - they both offer easily discernible increased performance.
the mohawk/sparrowhawk is a MILD r/d hybrid longbow that braces to a "D" shape.
the moab is an AGGRESSIVE r/d hybrid longbow that will show reflex in the tips when braced.
bow length - you will need to go a bit longer with any mild r/d hybrid longbow.
speed - the moab is faster.
stability - the mohawk will be more stable in the hand after release, due to the limb design and longer limbs help there as well.
"hand shock" - quantifying this parameter is not easy, and is manifested by a number of distinct values ... however, with all physics equal; same holding weight, same string, same arrow, same archer and release; the mohawk will readily be perceived to have less of this than the moab, and this felt "hand shock" will be less than that of most any afl longbow.
fwiw, i have a 29" draw length and my moab is 60" and my mohawk sparrowhawk is 64". both hold at nearly 55#.
click on the first link in my sig line, scroll down and see unbraced and braced examples of each of the three bows described above.