He's better point fighting, once Pereira changes gears and brings the pressure and tries to finish Izzy - he has been able to do so. Izzy has one gear and tries to fight at that gear throughout the whole fight. Pereira can change gears and so far Izzy can't keep up with Pereira when he turns it up.
Pereira is a tank and plods all night, doesn't really get tired and his gear change is like half a gear, but its enough to continue tanking and walk down the tired fighter. Had Izzy not calculated like shit in the 5th round throwing a hard telegraphed low kick which Pereira checked extremely well he could have moved enough for 5 more minutes. That didn't happen though, he shat the bed and got walked down and finished.