Hey Johnny,
Congrats on reaching the finish line. I've been noticing your posts and have appreciated your feedback. Would you be willing to PM me a few specifics on how you thought the real exam compared to your Altius exams? We have indeed been dubbed as "harder" than the AAMC and everyone seems to realize our exams are very SB-like, but over the last year most students have seen that as a bad thing, preferring NS or other exams that are easier. My fellow tutors and I meet every week and give our combined feedback to Altius curriculum team, so I'd love to pass along your insights.
Personally, I think that the SB is where the AAMC has been going for a while. Not that it will be 100% SB, but the trend is more and more SB, and generally a little harder than the AAMC practice tests they release. That's what I tell all my students, and they almost never come back "surprised" by test day.
After acknowledging that, I think it is important to recognize that the AAMC is 70-90% predictable, plus 10-30% outliers. The one thing they ALWAYS do is include a few outliers; those surprising elements on exam day no one quite expected. That's why I teach my students to EXPECT a crazy passage or two. I fully expect one exam form to be heavy in physics and another light in physics, for calculations to go way up and sometimes way down, I expect that each exam usually has one section that seems "killer," that CAR passages may feel normal one time and INSANELY long the next. I don't think the exams actually vary quite as much as it FEELS like they do, but adding a couple of ACRONYM CRAZY SB-like cell-trafficking passages to your standard MCAT-2015 exam form that already has a few SB-like passages can make it seem like armageddon!
P.S.- I still think that you are on track for something in the 510'sh range, maybe more. My students who were scoring similar to you are still going up a few points in MOST cases. Good luck!