sure, by beating him seneless. it's more complicated than that however. just read the issues where they do fight. thor get's knocked unconscious in fight one (although a wave of nausea hits him). the second fight he has the added might of the new warriors, which juggernaut shruggs off all thier efforts. juggernaut is by no means as fast or as skilled as thor, but, you have to look at the big picture. thor has a durability, and stamina limit. juggernaut does not. eventually thor will be to fatigued or hurt to continue.