I'm not sure if upgrade is the right word. DBFZ is a tag team 2D fighter (think MvC2). I absolutely loved that game and got me more interested in fighting games (even though I'm trash at them)
From what I can tell, Sparking Zero! is an arena fighter that's common for anime adaptation games (think Naruto: Ninja Storm) but is mostly known by it's spiritual predecessors the DBZ: Budokai Tenkaichi series. Not a big fan of the arena fighters since they're mostly yearly cash grabs with rarely any depth but to each their own.
Essentially it's a bit unfair to compare because they're aimed at slightly different audiences. OG DBZ fans have been waiting for a Budokai Tenkaichi "4" and this is it.
raises an interesting question - would taxpayers be able to sue or compel the city to sue the Trump campaign to make them whole? If we allow a precedent that bills can go unpaid indefinitely then the trump campaign essentially siphons funds from unwitting taxpayers and maintains an otherwise defunct campaign.
Oh wait, that's just how the wealthy live.