I think people just forget how good Penn is on the ground because of his elite striking. Penn's BJJ >>>> Penn's striking. If Penn decided to actually wrestle guys down to the mat and grapple with them, he would win just about every fight via submission in the first round. Just look what he did with Hughes and Florian in their fights. Hughes looked unstoppable and Penn made him look like a fool on the ground. Florian was coming off a first round sub victory over Stevenson and the second he got on the ground with Penn he looked clueless.
Penn wins this every time. George is good on the ground, but Penn is on a whole other level.
Greatest of All Time