Bad sushi: tons of rice, cheap cuts of fish, and sloppy preparation...yes, it's an all-you-can-eat place, but it doesn't even meet that basic, minimum standard.
Amazingly bad service: with three waiters/waitresses and few other people in the restaurant, I literally had to wave multiple times to get their attention...10% gratuity is automatically added, and I can see why.
Bad sushi + amazingly bad service = bad