Small block bottom build horsepower limit

Where exactly is he "wrong"? That high power exotic engine isn't even as fast as pb racers flat tappet 360

Read what he said again, said it wouldnt
last racing it at all. “ It wouldn’t survive one of my race seasons”
John has a light car, and the last few years hasn’t raced all that much, probably less than me( except this year this far).
This guy races at a track elevation of 6000 feet, you may have missed that.