I'm new to datalogs as well, just started learning about them today and what all the stuff means. I think it looks pretty good, just that your ecu remembers where it encountered knock and pulled timing, twice in a few places. I'd be concerned about that too. Maybe you can try to reset the ECU to see if you get feedback knock and it learns the same values again?
From what I've seen on the romraider forums, you don't need the accel position, just throttle position. AFR would be interesting to see, however I think it would be ok since AF Learning is pretty neutral IIRC.