"...Which means nothing, since Hulk is stronger than Thor"
No. He can get stronger. Not "is".
And we all know how regulary he does.
"Hulk would get manhandled. Kurse is atleast 4 times Thor's strength level"
Correct. Thats more than enough raw power to ko Hulk. Or Thor.
Top tier practically.
"I don't remember any physic backlash. He punched Juggernaut and had Cain on his knees."
It happened right before the punch. In the panel where Cain is screaming after the mindcontrol was broken by the Hulk.