I just wondered because I got shut down by SP's with 49/50/53 and 75/48/67 Control/L/R stats (which incidentally, were inferior to those of my SP's). Since I expected to have more success against these pitchers, I investigated the results. The first opposite SP has an ERA of about 2.00, and the second has an ERA of about 3.50. My pitching staff, on the other hand, hovers between 3.80-5.50 ERA. The only difference I could figure out was that I have an offensive catcher and these two teams have defensive catchers that are very good and good, respectively.
Since my experience with HBD is very limited, of course, the difference here could just be anecdotal...but I thought I might have figured something out.
Guess not :)