Trump said, “this is the biggest there is. This is the worst ever. Osama bin Laden was big, but Osama bin Laden became big with the World Trade Center. This is a man who built a whole, as he would like to call it, a country.” He went on to repeat a past claim that he had warned of bin Laden a year before his attack on the World Trade Center, but never received due credit.

The Washington Post – Bigger than bin Laden? 3 striking things about Trump’s announcement that Baghdadi is dead.
Business Insider – Trump claims the killing of ISIS leader al-Baghdadi is more significant than Osama bin Laden’s assassination
Axios – Trump on Baghdadi raid: “Bin Laden was big but this was bigger”