Hulk has limits to his strength, I can prove this.
Have you noticed that the only time hulk has ever defeated Juggernaut is when he was a horseman of apocalypse (War)
For example the first fight, Juggernaut and Hulk are fighting, Juggernaut beats on hulk and hulk beats on Juggernaut. The only difference is that hulk is the only one getting tired, hulk is the only one getting hurt. Hulk removes Juggernauts helmet thinking he ripped off his head....
Then,just by the sheerest and most hilarious coincidence,Professor Xavier,Marvel Girl,and Cyclops show up having just been driving by. With few words,Professor X and Jean Grey give the helmetless Juggernaut a double psi-blast.
Now back to the issue of Hulk and his "limitless strengh" his "limitless rage"
Well ill let you see for yourself
http://geocities.com/pic_housing/limits1.txt
http://geocities.com/pic_housing/limits1b.txt
The first one if you cannot read the text here it is
As the storm-lashed sky above him is slashed by the
salirain's screaming the hulk strikes out at the
Gargantuan creature pinning him to the acid-washed
alien plain. He pounds at reptilian flesh He claws at
the claw which holds him fast He smashes His snarls
rivalins those of the saurian all to no avail for he is
held and held fast and not all his pulverizins power
can shift the living weight that is slowly crushing
him
and the second
Then when the hulks labored breathing indicates
that his lungs have all but collapsed, the saurian
moves on of its own accord moves on to join the rest
of its herd of harmless hervvores that populates this
pitless planet moves on, paying no more heep to the
hulk than if he had been an ant underneath an
elephants heel an ant, an insect. etc...
Hulk could not save himself from being crushed, yet he has unlimited strength....thats kinda funny...isnt it?
Now let me tell you something about juggernaut. He doesnt need prep time to get strong. He doesnt need to fight for hours apon hours to grow in strength. You say hulk can just throw juggernaut into space. Well i say, juggernaut can throw hulk into space......
When Thor nulified juggernauts magic with his hammer, juggernaut was at a fraction of his power, but it was still enough to go one on one with thor.
When Hulk was said to be madder than he'd ever been seen before Thor locked hands with him and matched him in a direct test of strength.
Remember Juggernaut is a mystical being, physical power cannot over come magic.