B!Lucina IV woes

On my f2p account I invested orbs into the brave banner and was rewarded with a Lucina pull pretty early on. Randomly did a summon on my main account and got her again. However both have the exact same nature: minus atk plus Resistence. What we are odds? This is very frustrating and happens quite often to me. It's unfortunate how hurtful bad natures can be, especially speed ones.