Understood, actually it's a pity, that you need still eq by your ears, having 2 headphones, I never have used any good EQ software, but I do want to try it(Qudelix 5K parametric EQ), I was thinking you just need to download some preset or press one button and get close to Clear sound with Elex, but now I understand the problem, because everyone's eardrum is different, so there will not be any universal preset that you can download for over-ear headphone and call it a day?

At least as I understand, after asking other people under this post, EQ with IEMs can be more effective to recreate close sound of another IEM