Simple Nursing Readiness Assessment

I currently have the NCLEX Elite subscription for my NCLEX prep. I took a readiness assessment to see how will I do if I take the NCLEX rn, and my result was 55% with a "high" chance of passing. Does anyone else who uses simple nursing know if that's accurate? What are the chances of me passing the NCLEX on the first try with Simple Nursing alone? I also use the Saunders textbook, especially its question banks to study.