...we have a bit of a difference in status between, say, two Big Crown Subs with the exact same cases: the Tudor has the Valjoux-based 390 while the 6538 has the in house Rolex 1030. So while I appreciate your passion & enthusiasm for the Tudor marque, it does not change the reality that it is and always has been Rolex's secondary brand. Therefore, I cannot agree with your statement that "these examples should almost be handled as equal" because it is almost certainly a fact that Rolex themselves did not consider watches with the Tudor badge the equal of the watches with the coronet on the dial. The choice of movements and the original price points are proof of this, IMO.
Best,
T.