Wang Ping advised against killing Ma Su in the Three Kingdoms incident. How can Zhuge Liang become the new Three Kingdoms?

According to records, Ma Su's fate after the fall of Jieting is as follows: First, Zhuge Liang Biography records that Zhuge Liang killed Xie Zhong. Secondly, Wang Ping Biography says: "The Prime Minister has punished Ma Su and generals Zhang Lin and Ju Lushi." 3. Biography of Ma Liang and Biography of Ma Su: "I shed tears when I was imprisoned." Fourthly, the Biography of Ma Su quoted Xiangyang Ji as saying: "As I lay dying, the book said:" The public should respect the son, and the public should respect the father, so that I can't make friends all my life, although I don't hate the yellow soil. " So hundreds of people shouted. A bright man waits for his orphan to live a hard life. Fifthly, The Biography of Xiang Lang says: "Being kind to Ma Su, running away, if Lang doesn't know, he hates it, and no official will return to Chengdu. "

Therefore, after the defeat of Jieting, Ma Su did not take the initiative to apologize to Zhuge Liang as mentioned in The Romance of the Three Kingdoms, but fled for fear of sin and was arrested and sentenced to death. He died in prison before the execution. In that case, why did Zhuge Liang "chop" Ma Su?