He Heeee.....................I'm attempting to apply some form of NRL logic to the draw.........not that the words logic and NRL should be used in the same sentence.
However, let's suspend reality and remember we are in an NRL logic universe here...................seeing that there isn't enough time for all the teams to play each other twice, to help out the 'strugglers' and encourage the appearance of 'close games' and a 'competitive' competition, the 'strugglers' down the bottom half play each other twice and the 'quality' at the top play each other twice.
I also imagine the gambling companies prefer to have the least one sided games as possible.