The proof of relevance of LeBron's tweet in the data blog post is not based on analysis of the data; rather it is assumed from known outside context. What the data highlights is the results of a post known to be relevant. And while it may be true that he was retweeted by people with many followers, you have to consider why they retweeted it and why their followers clicked on it. I can't imagine that celebrities will automatically forward on their friends' tweets or that people click on everything celebrities say. The post argues that it is the relevance/timing of the post compared to what his followers were expecting at that moment that accounts for the sheer size and longevity of the click traffic.

That being said, there will likely be future posts that provide some analysis around the dissemination and reach of tweets and other messages.