New Jersey Gov. Chris Christie says his rival Marco Rubio is inexperienced, dependent on scripts and that a key moment in last week’s debate proved that the Florida Senator does not have what it takes to confront Democrat Hillary Clinton in a general election.

Christie said the most telling moment of the debate came after Rubio had answered a question from host Neil Cavuto about their recent verbal war of words. “When I went to answer him, he couldn’t look at me in the eye,” Christie said of Rubio, “and he never came back at me until he went back to New Hampshire, when I wasn’t there to answer him.”

Christie saw Rubio’s avoidance of confrontation as a sign of weakness. “I think that’s just a sign of his inexperience and if he can’t look me in the eye, he’s not going to be able to look Hillary Clinton in the eye, he’s certainly not going to be able to look Vladimir Putin in the eye,” Christie said.