Nux recalled the discussion he had with Orpheus before he left the Blood Continent as he observed Melia's status.
Level 118
Battle Power 577,821
And Potential 10,000,000
Melia was a Monster.
Honestly, if it wasn't for the 100,000 Boost of Battle Power he got after buying his most recent Ability from the System, he would still be far away from her in terms of battle power.
Of course, the fact that he is currently close to her in terms of Battle Power didn't mean was actually near her power level.
The Ability he bought was not an attack, defense, or control ability, it honestly didn't have much effect on his strength,
So those 100,000 extra points he received were pretty much just a show.
Nux still couldn't defeat Melia if she gives her all in the battle.
Of course, in his Incubus Form, he might actually stand a chance, but again, Nux didn't actually know how strong his Incubus Form actually was.
He needed to test it out and it would take him days to do that.