I shoot a couple versions of the Black Douglas- Mark II and Ultra, as well as a Reiver, and I must admit that I have never noticed this! I will have a good look tonight, but it strikes me that this would largely only be noticable if you had one eye closed, correct? I must admit that I have shot a number of my other bows, and never noticed the difference with any of them. Just not a factor that affects my shot placement.
That said, my Borders are my go to bows! Trying to save up so that I can afford another one......