For Sharon's own thinking, see the speech he gave this morning at the annual state memorial ceremony for Ben Gurion. (Unfortunately, the translation's a bit sloppy.)
He recalls Ben Gurion's strengths - indeed greatness - while implying that he sees himself following the "old man"'s path. At the same time, if you read between the lines, you'll also find Ben Gurion's faults - which Sharon indicates he also admires and aims to emulate. Try this paragraph:
David Ben-Gurion understood that the public's trust is given to a leader in order to lead, determine clear goals and make difficult decisions. The fate of the people and the good of the State guided him, not polls, media treatment or measures of prestige. "I do not know what the people want," he once said, "I know what is good for the people." That was the secret of his power. That was his great virtue.
To paraphrase a questionable saying, I guess one man's vanity is another man's virtue.