Anthony acknowledged frustration with the officiating Thursday night after Harden attempted 18 free throws in the Houston Rockets' 109-106 victory over the New York Knicks.
Asked if it was tough that the Knicks sent Harden to the line often when they got close, Anthony replied, "We didn't put him on the line, they put him on the line."
Harden led the NBA in free-throw attempts last season and is third this season. He was 16-for-18 Thursday, while Anthony, his teammate on the 2012 U.S. Olympic team, was 9-for-11.
"You look at that, you see the way that some guys get their calls," Anthony said, "and for me, I've got to get cut, you've got to see blood for me to get a call down there. So that's where the frustration comes from."