You take too many things at face value because you're just wanting to see DMC 3's melodrama and stuff all over again. DmC out the gate in its inception was to be different.
You have to consider what isn't shown just as much as what is. There's a lot you can gather about Vergil and his ability as a warrior in this war against the demons by just paying attention to. the. context.
Just think about it. I shouldn't even have to explain because this stuff isn't hard. DmC is a fairly straightforward tale.
The first paragraph is completely wrong. I didn't say that. Don't pretend to know what I think.
What I wanted to see, is a final boss worthy of this name. If in the mission before the one where I have to face him, I have to
save him, he's not respectable as a final villain to me and becomes a joke.
And not only that. It's a pretty simple concept to grasp. Say what you want, Chancey, but the whole game does not depict Vergil as anything particularly worthy as a warrior compared to Dante, both in the script and the acting.
DeLatour acted well when it comes to line delivery etc., but almost every time he was wielding that katana (and not using it as a cane) he looked like a fish out of the water. The scene where he stabs Mundus is a good example. Felt such an awkward movement.
Vergil has nothing imposing, or that makes you think he's a threat to Dante, that he can actually put him down in a fight in this game. It's so clear that Dante is the stronger guy between the two, that their final battle loses all the tension. You know that Dante's gonna win, as Vergil was not depicted as a warrior close to Dante's level. He's depicted as a tactician, a brain guy. And the very moment he screams for Dante's help in Mission 19, any respect I could have had for him as a final villain to face (I knew he was gonna be the final boss) was gone. That is not how you do it. I cannot respect a final enemy that cannot even watch out for himself without the hero's help.
When I see him at the end of VD, I think "Man this guy can beat the hell outta Dante!", a feeling that the main game absolutely didn't give me. They did it with Mundus (even though his battle was sub par), but not with Vergil.
EDIT: if you're willing to talk more about this, PM me, as this doesn't belong to the topic.