Sounds like you've figured out the game. True, after primary it is about knowing your shit and doing the best you can and getting winged, but there are people, not just a few, who do just that minus the getting winged part. Success in primary =/= success in advanced. If your success in primary came from only those categories we mentioned while getting average grades on the actual flying part it will show up real quick in a jet. If you rocked EPs, and airwork then you'll probably do great.
This^
Meridian gradesheets seemed based almost entirely on flying skill and SA in the aircraft, and not much from knowledge. Knowledge was important, but it was not a factor in grading (unless you couldnt do something simple/critical, like not knowing boldface). After all, the IPs briefed the student 99% of the time not the other way around.