From the link:
"According to the CNN debate clock, President Obama spoke at greater length than Mitt Romney during both debates, as did Vice President Biden during his debate with Paul Ryan. In the first debate, Obama spoke for 3 minutes, 14 seconds more than Romney — which means he got 8 percent more talking time than Romney. In last night’s debate, Obama spoke for 4 minutes and 18 seconds longer than Romney, giving him 11 percent more talking time."