Most all the good lines go back to Ralph Sturgeon and on back to EB Thompson, for the most part. They've been kept apart and criss-crossed back onto each other.
Jamie Duckworth took two lines and combined them for his. Those two lines are on the tip of my tongue, but just flew away. Sigh.
Here's what I ask myself. Can this line "A" over here bring anything to the equation? Is this line "B" over there already light years ahead? If so, why bother. Just focus on the better line. I'd guess that in most case, the line you showed might not bring much, if anything, to the Duckworth birds you have. So? Those are my thoughts.
If your Duckworth birds are sharp, and those I've seen sure are, and have proper feathering, proper legs, proper tails, proper heads, etc, what could this other group bring to the table? Meat perhaps? See what I'm saying here?
We respect what others do and have done. But, we must breed birds not get all caught up in just names. If the Duckworth birds are standing there looking like a million bucks, and the other Moore, OK group cannot bring anything to the equation, then why? Contrarily, it might be that the McDaniel birds better suit your own personal goals.
This isn't meant as a putdown of John McDaniel and his birds, as I understand his focus is meat and those birds are showing pretty good meat I suspect. All this also depends greatly upon what your personal goals are for the birds you keep/breed as well. Good talking points here.