Shaquille O'Neal ain't going to like this ...
Ex-NBA stud Antonio Davis says Shaq and Kobe have NOTHING on Michael Jordan and Scottie Pippen when it comes to the best duo in league history ... telling TMZ Sports it's all 'cause of Shaq's defense!
"Shaq can't come out and guard nobody!" Davis says.
The debate's been raging on for YEARS ... and when we got AD out at NBA All-Star weekend in Chicago on Saturday -- he told us there's no need for an argument anymore.