I definitely think you were drawing the Pat SC and not the Liberty. There is a noticeable difference between the Infinity and Freedom cams. My MM VFT at 70 lbs feels quite a bit different than my Liberty at 70 lbs...
As for it being extremely uneasy to handle (which is sort of what I took from what you related)....at over 70 lbs I would tend to agree with you a bit. The infinity cam has a stiff draw cycle. Couple that with a heavy draw weight and an inch shorter brace height and you will have an entirely different experience when going from the Justice to the Pat SC.
I am curious though as to why you thought the brace height on the MM was an inch shorter than the Justice. There is only a quarter inch difference on the two bows I handled recently.