I think there is personally.
My criticism of Shapiro is that he is all about building a sustainable winner, which is great, but at the expense of the killer instinct needed to some time pull the trigger to win get to a WS.
This is based on his past actions and that it is industry recognized, based on comments from AA and Shapiros's history etc, that he is involved in GM decisions and Russ does not have full autonomy for personnel selection.
One example I point to is that in 2016 when Cleveland was in playoff contention, Chernoff pulled the trigger on the Miller deal and gave away 4 prospects to get that key piece he felt they needed to put them over the top. I personally, don't think Shapiro does that move. Now, the Indians didn't win the WS, but the Miller deal was a huge piece away that put them a few outs away from winning it and probably the most impactful deadline move during 2016.
Shapiro is great at building processes, farms and sustainability. IMO Epstein has the killer instinct to know when to go all in for a WS winner, and also build solid teams year in and year out, which at the end of the day is what I want.
That is my .02 cents on those two for what it is worth.