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Giuliani on previous criticism of Romney: Hey, I have a big ego!

Rudy Giuliani is blaming his ego for his previous criticism of Mitt Romney—but he still sounds like a man with a point to prove.

Back in December, the former New York City mayor—who initially backed Newt Gingrich—blasted Romney to MSNBC as a "man without a core" and a "man that will say anything to become president."

He has since backtracked and endorsed the former Massachusetts governor.

The ex-mayor—who ran against Romney in 2008 for the GOP presidential nomination—told CNN's Candy Crowley on Sunday that "there's a certain amount of personal ego" behind his negative remarks.

He added Romney is now the "perfect choice" for president. "Maybe it was circumstances or whatever, but I had massive reductions in unemployment," Giuliani said of his time as mayor.

 "[Romney] had a reduction in unemployment of about 8, 10—I think it was 15%. I had a reduction of unemployment of 50%. He had a growth of jobs of about 40,000. We had a growth of jobs of about 500,000. So I was comparing what I thought was my far superior record to his otherwise decent record, but numbers weren't as great."

Despite the previous harsh rhetoric, Giuliani added that Romney is a "very intelligent, very engaged, very committed man." 

That Giuliani has a healthy regard for himself shouldn't come as news. Before leaving office in 2001, he cited the emergency of 9/11 to argue, unsuccessfully, for extending his term by three months.