Kellan, you don't know what you're talking about.
I rode a byerly 137 before I got on my substance, and the differences where the consistency of the pop and how it popped. They both seemed to pop just as hard, but the Substance felt like it just floated as where the byerly would go up, travel straight over the wakes, and drop straight down. The Substance edge is also easier to figure out. It rolls on smooth, and it rides a bit lower in the water, but it felt a tad faster to me. I love it. I thought I liked the byerly but once I got on the substance I was like, "that board is crap."