RE: bowtech for mathews
That is what I was thinking. I own a mighty might as well and have shot a few mathews bows before when I was shopping around. I didn't shoot that bow though. I don't know how close the speeds would be, but I would bet the mathews will have less recoil and vibration on the shot. It will probably feel different in your hand as well. I like the bowtech grips compared the mathews, but I have small hands.
I would compare the two side by side for sure before you buy one. The bowtech is also more adjustable being that they take modules and have a post adjustment vrs being cam specific for draw length. The mathews may draw smoother as well. But you could get a justice or even change cams on yours maybe if you wanted a smoother draw. I think the justice and mighty might are the same bows, just with different cams.
Paul