one of the things always disturbed me…Columbian seeds back in the '70s were fat. Particularly could contrast with strains back then that were generally Mexican or Jamaican. The former were smaller and the latter about the same if not larger. The smallest I remember till I saw a ‘fem’ seed was Acapulco Gold
Not sure it makes enough difference with male size to make the mental effort. It’s not like the girls have a size preference? 
Do they?