@cali_cpa
I am using both Becker & Ninja for practice, but for the sims I primarily use Becker. I average worse than you on the sims (40-60%), but according to others the sims on the practices are nothing alike to the actual exam.
With regard to the MCQ I am using Ninja, I average 70% (YIKES!), but trend 88%. Here is my breakdown:
Total Question Attempts:2511
Questions not seen: 211
Not answered correctly: 300
Average: 70%; Trending: 88%
People say you score 5-15% higher than your trending average; not sure how true that is, at the end of the day if you feel comfortable with the material, have a good understanding of the subject matter (for example I HATE B-Law), and put forth good effort in your studies you will be fine. Good luck got my exam a day before yours.