User blog comment:HQDominator/Ways to get to the ATK Cap in Brave Frontier Global/@comment-26420764-20151006135333/@comment-24277289-20151006191502

First, item buffs to the same stat DO stack.

Second, yes I did forget Aurelia's buff for Hadaron. I'll add it now.

Third, I used Toutetsu for Hadaron's max damage test because his SBB and UBB both give ATK boosts, whereas Ultor's UBB does not give an ATK boost to the entire team, just himself. So a 130% ATK boost + a 250% ATK boost > a 200% ATK boost.

Finally, yes they are formulated differently because they have different buffs that apply to them, Ultor with his UBB buffs and Hadaron with his Stealth mechanic.