nah what we'd need would be a min dmg gold rarity and a min dmg prp rarity per weapon type. as you see it on staff for example: min damage is the same for the first 5-6 reqs aka q3-8 in gold or q1-6 in prp. it is the same effect as for min damages with req: also the min damage is the same for q1-6. it is because there is a min value at which each can happen, which leads to the same min damage and a spread of 6 reqs due to the randomization. so for all these reqs the min dmg is identical.
gold rarity is capped lvl12+ which drops min value 12g
purple rarity is lvl7+ which translates to 5g min
item with req are capped 9g+ in b/w and 6g+ in p. purple items however do behave different in reference to gv, which actually leads to same min stats for a q2 in p and b/w actually. this means the min damage for q1-6 will be the same for w/b/p. consequently the min damage for purple q0 items however does differ from that for b/w.
so if we track min damages for each rarity we know where to apply them: purple -> q0, req -> q1-6, gold -> q3-8. since the table is ordered by req already, we do not need to track the second category, but much rather it shall be a backcheck as to how good our data already is 
same applies to gold min q3-8, which we only track in staves however...
