I don't have as much time behind my ONE Big Jim Thunder Child than I do any of my FOUR MOABS.
Both have these similar characteristics.....
Quiet, no hand shot, VERY point able, well crafted and finished, shoot where they look, great cast, and grips that fit the design. I have not chronoed the Big Jim, and it really doesn't matter.....its probably real close to the MOAB by what I can 'tell' by shooting it. I NEED TO LET IT BE KNOWN....NEITHER have CARBON, not a fan of carbon...all are boo lamed with dressed up veneers.
Bows to me are like Broadheads,...TOOLS, and I use my MOABS in certain scenario....and now use my SHORTER Thunder Child in others(That's why I bought it)...tight stands, small blinds, thicket stalks...thicket recovery's....yes, been known to shot an animal with one bow and track it with another....don't that many times....i'e Cade's recent hunt.
BOTH are primo....and both guys are a gem to work with....but they are NOT both the same bow design.....so they are hard to compare with all having positives.
There....hope that helps. I suggest buying one from Jim and also buying one from Jim. :D :D :D