Well, you have many variables that have to be suffice in order for one to consider it a land falling hurricane. Strength (in all stages), water temp., source region, how much shear, and what direction, upper level features: placement, strength, origin, are all variables that the hurricane has to consider, to say in a metaphoric way. In a typical year you get a hurricane land fall out of many that couldn't have touched land...that's why this season was so different, the amount of land falling hurricanes, and why is that so rare?Because of probability.