Do pediatric oncology nurses make about the same as pediatric oncolgist?

No. Pediatric oncologists are doctors (4 years of medical school after college) with training in pediatrics (3 year residency after medical school) and pediatric hematology/oncology (3 year fellowship after residency). Pediatric oncology nurses usually have 4 years of college (some 2 years, some master degrees with 6 years). Not surprisingly, the doctor makes more than the nurse.
No. Pediatric oncology nurses earn less that a pediatric oncologist. However, the may earn more than a regular nurse.