I see your point well. But you have yet to prove to me DMC 3 had much depth. And it does´t matter what fan base says, people have bias.
Infact DMC 3 was first DMC game i bought. DMC 1 got me hooked.
The joke part is true because i have read many times people talk bad abut Dante because of his lines in DMC 3, and that DmC Dante is "more controlled".
And even if whole world thinks DMC 3 was better it does´t matter what they think as long as they can´t prove their claim.
As for Vergil running to demon king, it would be more suitable for the story to end as he walked towards the demon, and not running in a weird way towards it. The demon was far away.