I don't know how to feel about this...It's range is more than the Slosher, it looks like. It looks like it's worse at spreading ink. In that video they only shot it one time, so I don't even know how fast you can fire it.
From the looks of it, the slosher definitely spreads more ink. The Slosher has the biggest inking potential in the game. Also I think it's funny that it's a washing machine...but seriously...you don't just carry a washing machine around and flail its innards about, it'd be too heavy! Is it a mini washing machine? What do you wash one shirt at a time?
The Blasters' bullet must not hit the ground to explode and have that that spread effect, correct? Therefore, I see how this balances with the sloshers, since you won't be able to lob over walls with this (although technically you can, but not as well). But it looks like it will be superior to the blasters.
EDIT:
On closer inspection, it DOES lob the bullet over. Which means this is essentially a more accurate slosher (which will make it totally useless for me, as I can't aim). It only makes sense that it does more damage, but a 1 hit kill will be too much, but there has to be something to make it work since all the other sloshers are also 2 hit kills, so the extra accuracy will be pointless.