With recent chapter, I'd say Medeia actually can tell one step ahead from Iaros as long as she stop limit herself to not kill anyone, the only think that's a trouble is that her standing / power is beneath Iaros whereas Iaros can order anyone he wants to as the Emperor, so Medeia is better than him this time even with her limitation.
For Iaros, his only weakness in my eyes is his pride or his refusal to admit that Medeia can be better than him, it was shown from his words since he undermine Medeia a few times. Now look where that got him, in Medea's clutches once again.
So no, Iaros is beneath Medeia and I wouldn't want him to be with and I wouldn't want to see him as someone equal to Medeia. Not meant to disrespect your opinion, they do make powerful villain couple if only Iaros didn't attack Medea's family first.
But since I saw Medeia as the best character in overall, I'd rather Medeia has someone like Halley who would do anything for her and put her first above everything else.
Ik that eros is the The villain but damn can you actually imagine how much of a powerful, ruthless couple medea and eros could have been, i can't help but feel that they suit each other sooo much like they understand eachother soo well that noone other than them can actually tell what is going on in their head. I wish they ended up together,(￣∇￣")