Sunderland didn't take a single point off the top four last season, yet the Irish striker said: "We went into Saturday's game believing we could get something.
"Last season against the top four, we were probably only hoping to get something.
"The manager has brought in good players and having them in the team is demanding more from all of us.
"The new signings want the ball to feet - they want to pass and move and not look for the long ball.
"I think you will see a lot more passing football from us this season and I think we can give a lot of teams problems with it. We set a high tempo against Liverpool and had chances, so we're disappointed not to get a draw from the game."