This is not a really good theory, but it won't leave my mind so I'll share it with you guys:
In the "The Fight" trailer, the announcer says that they're looking for the terrorist that "goes by the name of Dante", it may be just a manner of speaking, but it may also imply that his real name is not actually Dante (Tony??), which brings us back to the first trailer, where the "treatment" consists in asking him "what is your name?", as both a way to make him give up on "being Dante" and to make him to give up information about the 'organization'* and his real name 'Tony', the mindless kid living in their lies ("Their world is a lie", that would also indicate that demons are represented by the power in the system, politicians and stuff like that ["There are demons everywhere, in every level of society, in every part of the world"]), but Dante, following what we also saw on the E3 trailer ("Do not accept the world as it is"), and being a guy who makes justice to his sword's name, will not follow their plan and in a scene that may be the first time he'll activate Devil Trigger in the game will answer to "WHAT. IS. YOUR. NAME?" with a Devil Trigger transformation, blowing the walls, looking to the camera and saying "My name is Dante", chosing to see the world as it really is.
*On a side note, maybe the Resistance he may fight for is how we'll see the old names in this game. If his real name is not Dante, maybe each member of this Resistance use a different historical person's name, so we could have Dante, Vergil, Nero...
It's nothing really good, just thought I should share it.