Well, it's not just the lobe centers. It's the cam as a whole. Lobe profiles are different, on the Int but especially the exh. I'm speaking differences the cam card doesn't show.
Also too, Holdener has decent content, but he leaves import particulars out... the stuff almost everyone misses. The kind of stuff someone like myself, whose spent time in a dyno cell, would ask.
He also doesn't own a flowbench (as I do, 30+ yrs) so that reduces a huge part of the experience he claims to have.. which is why I'm not a subscriber.
Not sure what you mean by 'style'... suppose its good ?