Why Do woman like cornballs more than real dudes?

That depends on what you mean by 'Cornball' and 'Real Dude'

Im going to assume that by Cornball you mean a guy that is of corny nature. What corniness often means to women with intelligence and class is that this guy is comfortable in who he is, so hes not afraid to look or sound silly by being 'corny'.

Im going to assume Real Dudes are guys with Ford F150's, or a mustang, a lifetime gym membership to keep up their buff exterior so they feel less insecure and low intelligence. This is merely assumed because it is somewhat the opposite of a Cornball. These guys, sometimes known as 'Jocks' play rough sport, drive big and fast cars, act tough and pick on people smaller then them, but still wont back down from someone clearly bigger then them. This is all because they have an inferiority syndrome and need to do these things to prove that they are 'men'. If they are stronger then you and can beat you up, then they believe they are more of a man. The same rule applies for having a faster car, beating you at sport and having bigger muscles then you. They also perform dares and such that make them look stupid to make it seem like they are comfortable with who they are, but most people can see straight through this. Women like to feel secure, it is part of their maternal instinct, so some stupid women go for "Real Dudes" because they act like they have natural selection on their side by being 'tougher'. Its the same maternal instinct that makes other stupid girls go for guys with money. Makes them feel like they and their offspring have stability and security.