Senses in dreams are all about equal just as in the waking state.
It's really all a matter of remembering and recalling. Dream vividness, if you will.

I see it this way: the more attention one pays to a particular sense in the waking state usually, the more often and more intense that sense will be in dream recall and the more one takes a sense for granted, the less likely it is to be recalled very well upon recalling a dream.