I'm sorry but I fail to see how you can call that "Fact", so you think Nero is better than Sparda, understandable considering there hasn't been a significant amount of information released around him, but still, what you say is little more than opinion, just like this.
I for one prefer Sparda, don't ask me why, and it's not blind favoritism, just opinion, so really, your opinion is no more valid than anyone elses, your view on Nero is just as acceptable as Dante's view on Sparda, but what you appear to be doing is trying to put your own view above that of everyone else, bring yourself back down to earth and try and realise, everyone's opinion is just as valid as yours.