"I strongly believe I will be as fast as Manny. If I'm not as fast as Manny, I'll be only the narrowest of margins behind him," Hatton said in Las Vegas on Wednesday.
"He's going to get a shock. The technical side and the speed will shock him more than anything."
Hatton, who has a record of 45-1 with 32 knockouts, suffered his only loss in 2007 when Floyd Mayweather jnr stopped him in the 10th round at welterweight.
Southpaw Pacquaio is 48-3 with two drawn and 36 knockouts.
Mayweather's father, Floyd snr, trains Hatton and boldly predicts Pacquiao will be knocked out in the junior welterweight showdown.
"We're going to bust his ass up," Mayweather said. "Ricky is one of the easiest guys in the world to train. Makes it easy for me and hard for Pacman. Ricky surprises me at times. I'm sure he'll surprise Pac. He's an A-1 student.
"Ricky has a very good chance of knocking him out. Pacquiao is fighting a man who has real strength, can keep real pressure on him, bang him to the body and the head and smother him at the same time. "
Hatton is comfortable at the 63.6kg and likes his chances of handling whatever the Filipino star can throw at him. "To say I'm confident would be an understatement," Hatton said.
"Training is going well. I'm feeling really sharp. Floyd and I have been doing good work. Obviously the speed factor is going to be a big factor.
"I've always said at 140 pounds I believe I'm too strong and too big. With the hand speed and punching, the things I'm learning with Floyd and my boxing ability, Manny has something else to worry about besides the sheer size.
"He has some technical ability to worry about come the night."
British supporters are expected to outnumber Pacquiao backers 2-1, according to Golden Boy Promotions chief executive Richard Schaefer.
"I'm aggressive but I'm also technical. They're going to see the boxing side of Ricky Hatton," the British star said.
"Ricky Hatton always goes for the knockout but you can't go in there crash and wallop. You have to show a little more technical ability. I think that's going to show up bigger than the size aspect.
"If you can make him miss, he's very open and off balance," Hatton said. "If he misses, he's going to have some big shots waiting for him."