philosophically, your question is incomplete and thus invalid.
好人 and 壞人 is a relative term which requires defining before being used in any arguments in philosophy.
So, the answer depends on your definition of 好人 and 壞人.
One common definition in philosophy for good and bad is when one is better than the other in a property, the better one is good and the other one is bad. In this definition, good and bad is comparative and thus no matter which property you are comparing and how many you are comparing, half will be good and half will be bad.
Therefore assuming this is the definition of good and bad, then the number of 好人 will always equal to the number of 壞人.
If your definition of good and bad lies in a certain standard of morality, then you will have to check every single person in this world to see if they matches with that standard to determine whether they are 好人 and 壞人. Having a statistic survevy on a pool of random population should give good estimate on whether 好人 more or 壞人 more.
If your standard of morality is the official law of the world's government, and one is 壞人 only if they are found to be guilty upon the world's law, then according to the ratio of criminals to non-criminals of the world, 好人 is more than 壞人.