While playing around with companions I found that the Frost Mimic is not correctly applying all its ratings, more specifically the combined rating.
I found this issue while swapping the Mimic out with the Cat. Both the Mimic and the Cat give the same amount of Defense and Combination rating(assuming they are the same quality like mine are). The only difference is deflect and awareness. The Cat would put me at Defense cap, the Mimic would not. If it was not correctly applying the %, I feel there would have been a larger gap in the ratings, but there is not.