But what is Hulk going to do to Apocalypse, hit him harder? If Apocalypse saw some brute strength creature coming toward him, he would morph himself into something similar to Captain America's shield. I don't think Hulk could win simply by getting stronger. Apocalypse turned himself into adamantium once to stop Wolverine from cutting him, though Hulk did bend adamantium once, but I think a proficient chemist like Apocalypse is aware of vibranium. He also has the patients to deal with the Hulk, he sleeps for thousands of years.