They're pretty similar.
So, the first thing you need to know is that flat +Minimum and +Maximum effects get applied first, and they do so in a way described in this answerdescribed in this answer. The short version is that the +Minimum
gets applied first, then, if this causes your weapons Maximum
damage to be lower than your Minimum
damage, your +Maximum
will be increased to Minimum+1
, and then finally, the +Maximum
is applied.
Effects that are described as a range work as expected, adding the first number to your weapons Minimum Damage
, and the second number to your weapons Maximum Damage
, simultaneously, so there should never be any concern about strange overlaps. Bonus Elemental Damage on a weapon works this way as well, and is also applied after flat +Min/+Max effects.