“Shark Tank” co-stars Mark Cuban and Kevin O’Leary, aka “Mr Wonderful,” have locked horns over tariffs on China. What Happened: On Friday, O’Leary voiced his discontent with China’s trade practices on X, formerly Twitter. He argued for drastic action in the form of raising tariffs to 400%, saying that China has been unfair in its business practices for decades. “I can tell you firsthand they DON’T play fair.” “I’m calling for REAL action, raise tariffs to 400%. Make it SO painful they have no choice but to come to the table,” O’Leary stated, referring to Republican presidential nomineeDonald T…