Probably shouldn't comment since I haven't had a chance to read those yet, but I did mention above about how I thought the system was outdated.
Judging by the hash rates in the top of those they aren't very recent.
If im wrong, please dont hang me! I'll apologise for my ignorance once I have had time to look at things properly.
4.2 and 4.3 are the important ones - 4.1 is just background. They
are from last year, but the score method is the same now as it was then.