Couple things there...
Because they had the benefit of being in more than one game, directed by people who wanted pure, over-the-top action. You could easily extrapolate that the DmC counterparts could also do some crazy sh!t, if the narrative called for it.
There's not really much proof that classic Sparda is stronger than Sparda from another universe. There's not much that says classic Mundus is "far stronger" either, considering that maybe a) DmC Sparda never tried to kill Mundus, and b) Mundus is still immortal thanks to the Hell Gate. For all we know, Sparda could be just as or stronger than his classic counterpart, but he went up against something that literally could not die.
And Sparda and Eva didn't didn't fight Mundus together. Eva distracted him at Paradise while Sparda hid the twins away. He was more concerned about his own children that his wife gave her life for.
I wish I could make bold and totally biased claims like that. There's no way to really know if classic Vergil could defeat Mundus, but I'd have to say noooo, considering the whole immortality thing, among whatever other immense powers he might be able to suck from the Hell Gate.
And that's why we never have to spend Red Orbs to buy all the other abilities for a new weapon, yeahp.
This matters so little. If you, by some miracle, always knew how to walk, like, straight from the womb, and I learned to walk like a regula'-ass baby, in the end, you wouldn't be able to tell who was better at walking...
The term "equal" is very skewed, and difficult to quantify. It's entirely possible that while DmC Vergil is weaker than his brother, it could totally be because Dante is way stronger than him, and could by some stretch of the imagination be stronger than both of the classic Sons of Sparda, too. As in, maybe DmC Vergil is just as strong as classic Vergil, but DmC Dante is just stronger than all of them.
See, the scales can tip both ways.
Oh, and I'd argue that DmC Dante might be stronger than his classic, even just in brute strength, given the things he's punched around with his bare hands, and to great effect. Then there's what he's done with Eryx on...
2. the grounds that they regularly do things their DmC equivalents have not been shown to be capable of
Because they had the benefit of being in more than one game, directed by people who wanted pure, over-the-top action. You could easily extrapolate that the DmC counterparts could also do some crazy sh!t, if the narrative called for it.
and their father is the stronger version of Sparda (DMC Mundus is far stronger than DmC Mundus but DMC Sparda won and DmC Sparda and DmC Eva together lost)
There's not really much proof that classic Sparda is stronger than Sparda from another universe. There's not much that says classic Mundus is "far stronger" either, considering that maybe a) DmC Sparda never tried to kill Mundus, and b) Mundus is still immortal thanks to the Hell Gate. For all we know, Sparda could be just as or stronger than his classic counterpart, but he went up against something that literally could not die.
And Sparda and Eva didn't didn't fight Mundus together. Eva distracted him at Paradise while Sparda hid the twins away. He was more concerned about his own children that his wife gave her life for.
3. Vergil is significantly stronger than DmC's poor excuse for a demon king. sure DmC Mundus has a few impressive looking tricks from manipulating limbo but other than that the only thing he has is the hellgate giving him fake immortality.
I wish I could make bold and totally biased claims like that. There's no way to really know if classic Vergil could defeat Mundus, but I'd have to say noooo, considering the whole immortality thing, among whatever other immense powers he might be able to suck from the Hell Gate.
4. DMC Dante beat DMC Vergil because he accepted his human side and Vergil didn't and the DMC sons of Sparda don't need training they seem to be experts with every weapon the moment they get it. ( just watch the cutscenes after Dante gets weapons, no matter what he ends up with he always knows what to do with it.)
And that's why we never have to spend Red Orbs to buy all the other abilities for a new weapon, yeahp.
This matters so little. If you, by some miracle, always knew how to walk, like, straight from the womb, and I learned to walk like a regula'-ass baby, in the end, you wouldn't be able to tell who was better at walking...
5. DmC Dante beating DmC Vergil ( who was shown to have always been weaker than DmC Dante) is not a reason why he should be able to beat DMC Vergil ( who is shown to be significantly more capable than DMC Dante, easily wins on the first try and only loses in the end because of his refusal to accept his human side) even if you deny the differences in power level between the two Dantes there is no question that the two Vergils are not equal.
The term "equal" is very skewed, and difficult to quantify. It's entirely possible that while DmC Vergil is weaker than his brother, it could totally be because Dante is way stronger than him, and could by some stretch of the imagination be stronger than both of the classic Sons of Sparda, too. As in, maybe DmC Vergil is just as strong as classic Vergil, but DmC Dante is just stronger than all of them.
See, the scales can tip both ways.
Oh, and I'd argue that DmC Dante might be stronger than his classic, even just in brute strength, given the things he's punched around with his bare hands, and to great effect. Then there's what he's done with Eryx on...