Well, you still miss what I repeated twice: forget % values if you want an average power. Just forget it.
For you own and non-asso teams you see relative (%) and absolute (for example 112,8) values for each of three columns (defence, attack, physics).
For asso teams you see only %, therefore you cannot calculate with absolute values, therefore you cannot proof the overall value.
But it is calculated by the algorhytm correctly I'm sure, I see no sence for the developers to manipulate those calculations (dont see how as well), no option for the teams to do so.
Well, I might explain it not as good, but I'm really done for this thread, its too obvious