It would depend. When you say diploma are you talking a 2 year program? BSN is 4 year program so in my opinion BSN is going to get you more points as it's more education. Check CIC site to be sure. Also just a FYI for you.... a diploma RN can't work as a RN in Canada. Canada requires a bachelors degree. It's not to say a diploma graduate cannot work but it would be as a LPN most likely unless you want to go back to school once in Canada. It varies with each college of nursing in each province.