It's funny you can't work through the logic. Judge 1 most US biased. Judge 12 most China biased. 3 are US biased. 9 are China biased.
Which judges should you look at? It's the same as opinion polls
What is the answer to the diving question? If you can't figure that out you will never understand polls.
I seriously can't believe a grown man can't figure it out. A 12yo could.