Brand Asset Valuator

Here's another marketing course take-away on brands. I took a look at the BAV (Brand Asset Valuator) and analyzed (1) Major League Baseball (2) National Basketball Association and (3) National Football League. As you probably know, these three brands are incredibly successful, each bringing in over $4B per year. The BAV results tell me that the NFL has the strongest brand, considered strong in both brand strength and stature, while the MLB falls a bit short, though is considered mass-market. Not surprisingly, and according to my own taste and understanding of popular media's preferences, the NBA is considered a fatigued brand. This data aligns closely to actual revenue (see screenshot below), however social media support is actually a bit off. According to Ethan Beute, the NBA is by far the most popular of the three on both Facebook and Twitter, followed by the NFL and then the MLB. This could be due to all sorts of phenomena, but my theories are that basketball players love tweeting, and people just 'Like' King James.

When I looked up the definition of the 4 pillars according to BAV Consulting, I was surprised to see that the NBA and MLB have low differentiation ratings compared to the NFL. Is it because they both use spherical balls and the NFL's is oblong? Or is it because the NBA and MLB are both sports enjoyed across the world while the NFL is really just an 'American Thing'? 
When considering brand relevance, we apparently must 'try' the brand to value them. As a football fan, I could see how someone might say they would 'try watching a Vikings game', and definitely see why someone would say 'I considered the Wolves, and decided not to watch the game.' I have a feeling that's not what BAV is getting after, but am not sure how you really 'try' a brand like those analyzed. Overall, I suppose it's an interesting way to frame up brand preferences, but based on these brands, I'm not sure I believe in it.