Exactly!
You'd be suprised at how many girls we'd deem to have "no ass" or a "flat ass" actually have *excellent* asses when they are put in doggie position.
Similarly, you'd be suprised at how many "juicy asses" turn into quivering mounds of rumbling jello when you test them in doggie. Even girls that have normal or modest-sized asses can still shake and shimmy in doggy.
Now a squat bootie on the other hand... a muscular but larger-than-normal ass that just snaps-back into position as soon as you crash into it... that's just a plain gift from God.