Brilliantly designed simulated tests!

How come everything turns out to be same. I think the makers made sure that the questions, syllabus, marking, pattern is same. Hence, every time i gave the mock test for AVIXA Certified Technology Specialist - Design, i got the feeling that it is the actual exam and this is how i will be judged. But thank god, when i gave the actual one i was not nervous at all.
Thanks 

chong543