Hulk is by far superior in strength, Broly has the Ki attacks. It's energy projection vs super strength, I say Broly starts out with speed blitz attacks then realizes that the Hulk becomes more and more immune to it. Then he resorst to short bursts ki blasts, then he realizes it's still not enough, he then goes kamehame or something like that and the Earth is filled with 10 mile wide by 4 & 1/2 mile deep creaters. It's still not enough, he decides to destroy the planet, then the Hulk is left floating in outer sapce, but the cosmics had to step in and seal them in a god-proof dome of some kind. Broly then goes all out with a spirit super bomb just as when he launches his attack that would have destroyed an entire galaxy; amids the intense illuminated light of the power he accumulated a big green hand stretched out, grabed by the torso and another-a fist-came out and starts pounding on his face. The dust finally settles, Broly is down and returned to normal Sayan/Saijan mode brutally wounded and broken nearly to death and Hulk standing there naked from the extreme ki blasts that went through his body. Close up view reveals the Hulk's skin and flesh regenerating. He then screams with a loud roar and said "Hulk is strongest one there is"-The End.
Hulk vs Thanos thread-the most biased ever.