At least this is true in public situations and in which women are going about their ordinary activities. Women rarely look at men directly for a prolonged period. When walking down the street women tend to keep their eyes ahead of them and when men pass women tend to mask any overt look at the male. At least this is the case in many western cultures. The more confident and mature the sexual relations between men and women are, the less likely that this is the norm.
Women achieve their sexual assessments in a briefer period of time.
It is as if women are more attuned to making a judgement and then sublimating their interest, their fascination in men. Women are generally far more sureptitious than men in objectifying. But they do it nevertheless. Women rarely stare at men. Yet ironically our society has visual media images of women that show them constantly staring.