#1, how many ar15's do you see with 24" barrels?
#2, like we said, they are comparing their own heavily loaded round to an anemic factory load. The American Whitetail load from Hornady is close to 22% under a max capacity/pressure loading.
I've been loading 7mm-08 years before Remington took it up and know the round intimately. As a wildcatter from years back, that 7val does sound interesting to an AR user but to compare it as an even match for a 7mm-08 is stretching the truth a good bit. I'm not saying it wouldn't be a good round for AR users as it does sound like a good WT or Hog round, maybe even a bit better than my 6.8 SPC but lets keep some reality among the shooters and let the factories fight off the BS claims. Compare them on an equal basis and you will see that there is no comparison between the 2.