:lol: This all feels like fanboy warfare.
The fact of the matter is this, NO ONE can determine Sparda's current level of power as there isn't enough evidence to suggest either way, he may have been incredibly powerful before, but really, thinking about it, there's no hard evidence to support the fact that Sparda is still stronger than Dante or vice versa.
We'll just have to wait and see until more light is given upon the subject, for all we know, Dante could indeed be stronger than Sparda, infact, there's more evidence to support that claim than the other way around.
Still, I'm not actually going to give a definite answer on the subject until I have hard evidence that proves Sparda is stronger than Dante or that Dante is stronger than Sparda, all you have to go on is pure theory and speculation, nothing more.