Let's see... A Black Belt in Systema, Sambo, and Brazilian Jiu Jitsu VS a chain smoker who loves to eat junk food when his wife isn't looking from Hawaii/Chicago/etc..? Hmm... I'll go with the former KGB operative for 300 Alex.
Black Adam, Superman Prime, Cyborg Superman, Doomsday, Doctor Manhattan, Thanos, Composite Superman, Shazam, Captain Atom, Lobo, divine spawn, the one above all, Apocalypse, odin force Thor, ssj4 vegito, deadpool and Onslaught are all people who could beat hulk at one point or another. People say he is infinitely strong because it is based on how angry he gets but seriously there is only so angry he can get this is the same thing as when people say that superman is potentially invincible.