Thing is that its YOUR opinion and not fact.
Try to remember that before saying it like a fact.
I've gotten plenty of high scores using this jake which proves your little assumption wrong
With the sniper you can pull of hits from far away and also hit the green bonus glass which makes chaining pretty easy.
And as I said earlier, the Grenade pretty much wrecks any of the bigger monsters that come your way.
And having Target Master equipped in your skill slot makes your quick shot with the sniper a 1 hit kill for most of the smaller enemies and also fast.
Not sure where you got that
assumption you came up with.