Average is such a stupid nonsense word that never gets clarified.
Do you calculate the energy needed for each feat then divide it by number of feats?
That's true average.
So the mosquito feat is so low that you may as well mark it as a zero for energy. Then calc up all his other feats and it will give an average.
Which will still be very high of course.
Now do the same for Thor. Thor's average will be higher.