Its only logical...other terminals has got so many more passports to stamp that maybe the custom officers don't even bother to do a check on the Reviewequency of the visitor. B.T custom officers jia ba liao nothing to do so.......
Furthermore there can be other airlines' passengers coming in at the same time but for B.T, again, they have alot of time to idle and aim you.....catch a few go interrogate, "play" with you.....then send you back home. Time pass faster lidat....
You know the situation best, good luck.