Notice the body style in newer Brockways. You'll find that they resemble Macks. This is because many years ago Mack bought Brockway.
Also, in the Autocar thread, those had an older look to them for a long time after Mack bought Brockway, then they started looking absolutely HIDEOUS. That's because Autocar was bought by Volvo, who ruined the look of those trucks like they did with White when they bought them.