Heroes 5.5 WarGame Edition - Tactical Edition.

Oh, well, if there are such problems... Then you can reduce the luck stat (even if not to 50%, but to 75% somehow), but then you should also reduce the morale stat (so that it doesn't give +50%/-50% to the attack bonus, but changes it by a smaller amount). That's just my opinion. In other words, regardless of the changes, the stats should be comparable to each other.