Giardello is a proud man & with a record like that, rightfully so.
He may not rank with the Ketchels, Grebs, Robinsons, Monzons or Haglers in boxing's pantheon; but he was a legitimate, lineal, middleweight champion who won the title from fellow Hall Of Famer, boxing immortal, Dick Tiger.
Carter was a rough, tough, technically sound fighter, with good (not great) power, a decent mandible & average speed. After a while he would get frustrated & basically give up on a fight.
Two examples: First, the old cutie, middleweight champ, Joey Giardello, who knew every trick in the book & he threw it at Carter when they fought for the title.
Most ringsiders had Giardello winning comfortably), Dick Tiger (W-15, L-15) & Billy Graham (W-10). To name just a few: Gil Turner, Johnny Saxton, Walter Cartier, Ralph "Tiger" Jones, Rory Calhoun, Joey Giambra, Holly Mims, Henry Hank & many more ...
Giardello retired with a career record of 100-25-7 32 KO 1 NC & a reputation as a fighter that never ducked anyone in his long career.
Luis, a consummate boxer, bipped & bopped Carter into frustration so absolute that at one point Carter tackled Luis, grabbed him by the upper torso & tried to fling him over the ropes ....
Denzel Washington is a great actor & the movie is very good as long as you view it as basically fiction ...
Most observers agree that Joey won by at least 10 to 5 in rounds.
Carter at about the 7th round realized he couldn't do anything with Giardello & basically gave up on the fight & went through the motions in the 2nd half of the bout.