Not in it's entirety. Mostly just looked at the cams they picked then jumped straight to the graph. What I did see there are some thing that could have been improved. I would have really liked to see more cam choice (104, 108, 110, 114). As 104 is not as common on the street as 108. While 114 is out there (ls engines I think? I dunno I don't touch GM). Maybe throw in a 120 to really show the difference.
Honestly if I ever won the lotto. I would just build a dozen really common engines (318's with minor work. 360's with XE series cams and 10:1 on iron heads. Stroker 408s. Eddie heads vs iron heads, etc etc). Then swap just cams, or just heads, or headers, carb. Etc etc etc. And dyno and document it all. And share it with everyone on here. So they could see real world, no BS results. And get a good look at proven power from a certain common combo.