Yes, I don't know why they compare a short magnum cartridge to a standard cartridge of a different calibre.
Winchester is no stranger to apples vs oranges comparisons. I remember the WSM ads, comparing Ballistic Silvertip WSM loads to Power Point in 300 Win Mag
The Creedmoor / 6.8 comparison is done just so everyone knows the 6.8 is vastly superior downrange. They're also comparing the 6.8 to a 30-06 180gr for big game haha