I don't claim to know more or even anywhere near as much as Hornady, but you cant base a comparison on some calibers that offer superformance ammo to others that dont. Its apples and oranges. There's nothing wrong with Hornadys ballistics, I'm sure they are very accurate.
Whats wrong is ranking calibers off just "straight shooting" and "power." There's so much more to it than that. I see the 22-250 and .338 Lapua both have an average score of 15, this must certainly mean they are very similar and could be used interchangeably for either 1000+ yard shots or varmint hunting
"Most people can't hit a flock of circus tents at those ranges." - P.O. Ackley