2016-01-04, 10:31 PM
you have the wrong idea about potential ranks
there are 4 potential ranks (rare, epic, unique, legendary) but 5 tiers of potential lines which we'll just call tiers 1 through 5. On top of this lines also depends on item level but that's not directly relevant to your question.
each rank draws from two tiers of lines (1 and 2 for rare, 2 and 3 for epic, 3 and 4 for unique, 4 and 5 for legendary) which is why you see 3% and 6% for epic, 6% and 9% for unique, 9% and 12% for legendary. The first line has a higher chance than second and third lines of drawing from the upper tier (i.e you're more likely to get 12% than 9% on the first line). To answer your question, the tier from which each line is drawn can change with every cube so an epic 6% luk 6% luk can be for example 3% str 3% dex on the next roll (if it stays epic).
this is also why you never see flat bonuses (ATT +12, STR +12) on main potential for epic or higher equips because the flat bonus is a tier 1 line which is exclusive to rare potential. bonus potential works in I believe the same way but it has different potential pools so you can see flat bonuses on high potential rank gear because there are higher tier versions of that line.
might be wrong in a couple areas but this is how I understand potential works
there are 4 potential ranks (rare, epic, unique, legendary) but 5 tiers of potential lines which we'll just call tiers 1 through 5. On top of this lines also depends on item level but that's not directly relevant to your question.
each rank draws from two tiers of lines (1 and 2 for rare, 2 and 3 for epic, 3 and 4 for unique, 4 and 5 for legendary) which is why you see 3% and 6% for epic, 6% and 9% for unique, 9% and 12% for legendary. The first line has a higher chance than second and third lines of drawing from the upper tier (i.e you're more likely to get 12% than 9% on the first line). To answer your question, the tier from which each line is drawn can change with every cube so an epic 6% luk 6% luk can be for example 3% str 3% dex on the next roll (if it stays epic).
this is also why you never see flat bonuses (ATT +12, STR +12) on main potential for epic or higher equips because the flat bonus is a tier 1 line which is exclusive to rare potential. bonus potential works in I believe the same way but it has different potential pools so you can see flat bonuses on high potential rank gear because there are higher tier versions of that line.
might be wrong in a couple areas but this is how I understand potential works