I believe those are for the optional perk now that TTK is out. Example, a brand new helmet you haven't dumped ANY xp into yet might say Intellect 35/50 Discipline 40/65 As you level up that helmet it will give you a perk choice: increase intellect or increase discipline but NOT at the same time. So if you choose Intellect you'll get 50 while Discipline is still 40. Or choose Discipline to give you 65 while Intellect stays at 35.