Most women need to have clitoral stimulation in order to reach orgasm. The clitoris is about 2-3 cm closer to the front of the woman's body than the vaginal opening. Thus, it is possible, even probable that thrusting misses the clitoris all together.
Clitoral stimulation is indirect or sporadic.
The CAT allows the man and woman's combined thrusting to do the job. What's different is that the man has vaginal sex with his partner from a higher angle than usual, thrusting pressure on the woman's clitoris while he enters and re-enters her in response to her pelvic thrusts. The man enters initially from between the woman's legs which are apart and slightly bent, but then lifts himself further up the length of her body so that his thrusts make contact with her clitoris. At the very same time the base of the man's penis is also being stimulated. By leaning to the right or left of her torso, the man can rest his weight partially on his partner and partially on whatever the platform is for this event.