Colback believes Sunderland, who had a goal chalked off for offside late in the second half, should have taken more from the game.
"It was frustrating to only come away with a point, especially after last week's goalless draw," Colback told safc.com.
"We just couldn't get that breakthrough we needed.
"It was a very frustrating afternoon and it's a game that we felt we should have won.
"It was an open game all round, but we looked dangerous on the counter-attack and could have scored maybe three or four goals."