i guess guy explained it in scientific terms. but, the adapter plate gives you two places to hold on to further out from the center of the auger where all of the torque is generated. it takes significant strain off of your drill and your limbs when that SOB grabs hold. i tore the handle right off my k-drill within a few weeks when it grabbed after a hole full of slush filled with water. also tore my right elbow (the trigger holding hand/elbow) up. still isn't completely healed to this day (1 year later). the auger plate makes it a completely different animal.
I haven't had that problem but I get what you're saying. I called the guys at k-drill and they said none of them run the k-drill with a base plate.