I asked this question to a paramedic in the Hudson Valley who also works as an RN in the ER. He also teaches RN classes. He said that he earns more money as a paramedic versus part time nurse. It depends on the hospital and employer.
What about the number of hours for each? While some Paramedics state they make more yearly than RNs, they do have many more hours put in if they are FT. The RN will be considered FT at 32 or 36 hours per week and still make a decent living.