My guess is that the animals shot with the Partition bullets are running further than say from a Bal. tip or other lighter designed bullet that blows up on impact. If you get 100% energy transfer from a Bal. tip once it hits the deer chances are that deer is going to drop like a sack of potatoes. The Partition will most likely go through and you'll have to track the animal further since some of the energy is carrying the bullet through the deer into the earth on the far side.

In my opinion for deer or smaller Partition might not be the best unless you are shooting for the biggest deer. Now for Elk, I can't see the Partition getting a bad rap at all. Same for Bear. I woulnd't use anything but a premium bullet for either of the latter.

Power
http://www.powerandfury.net/hunt.html