PMI Study Hall Exams

I’ve been using SH for alot of my practice, and like I’ve seen written here by many, it’s demoralizing. To my question. I’ve routinely been scoring 60% (or lower) on all the mini exams, but sat for my first full length mock today and scored 78%. Is this dumb luck, or am I finally getting it? Are the quizzes harder than the mock exam? And how do the mock exams typically align to the real thing?

Breakdown as follows of my questions FWIW Expert: 20/43 Difficult: 67/80 Moderate: 49/52

Thanks in advance!