Jenny didn't do very well in the diamond league, but you ranked her third in large part due to her silver at Worlds... Bosse got first at worlds but wasn't top 3. Just saying, it does seem like you take worlds into account some times more than others.
We try our best to be consistent, but it's difficult.
In this case, as the poster above pointed out, Simpson does earn extra credit compared to Bosse because of how loaded the World Championship field was. Finishing second in THAT field is arguably worth more than Bosse winning against a weaker field (granted, this isn't Bosse's fault, but several of the best guys in the event were hurt this year; Bosse was the only 2016 Olympic finalist who made the WC final in 2017). Simpson also gets credit for winning USAs (not a DL quality field, but still some quality runners).
I'm interested who you think should be ahead of Simpson. In Bosse's case, two of the four guys ahead of him were WC medalists and another, Amos, dominated the DL circuit. Several of the women below Simpson barely raced on the DL circuit at all. Simpson was great at Worlds and USAs, and 6th at the DL final was better than anything Bosse did all year outside of Worlds (he was 4th in Monaco, but the 800 wasn't a DL event at that meet).
As we said in the article, there's definitely an argument to be made that Simpson should be lower. Just wanted to show that we do put some thought into it.