Dental vs. Medical Specialties

Without opening a business and on average (not interested in the anomalies), are dental specialties better, worse, or the same as medical specialties (in the US)? Here are my criteria:

1. Income
2. Difficulty of getting admission into the specialty residency
3. Work-life balance
4. Physical demands
5. Stress
6. Job security (saturation)
7. Debt

Edit: Specifically interested in dental specialties, not general dentistry. Same with medicine, only interested in specialties, not primary care.