I'm willing to try playtesting Zuckess on a c-roc once or twice, because the point that a huge ship has a harder time with dice mods is fair. However, I really feel a better answer to this would be to do some new huge ship only crew with a game effect that accomplishes the dice mod at a cost of something. Zuckess not giving the epic stress means no other mechanics could be used against it that you could on a standard ship.
Maybe something like Prince Xizor crew, scum huge only. Spend 1 energy to turn an eyeball into a hit result (or make it any amount of energy for any amount of eyeball results?)