How relevant is Parker's performance against Wilder/Zhang compared to the upcomming Dubois fight?

It's easy to throw all 3 opponents into the category of "Puncher" and call it a day, but there's so much more to it than that. Wilder has a very unconventional style that Parker brilliantly...

How relevant is Parker's performance against Wilder/Zhang compared to the upcomming Dubois fight?