It wouldn't matter, imo. Power gem is a cosmic artifact that grants virtually infinite strength and durability -- far far greater than one of cytorrak's trinkets.
Spider-man flicks his wrist and juggernaut is sent into orbit. Power gem might even give him enough strength to break the enchantment and kill him, or turn the ruby's power against itself.
first of all it's 'current' Jugg so no Cytorrak involved..
Jobbernaut will lose..may be his life but if it was Classic Juggernaut instead , power gem or not Spidey isn't hurting him..
If onslaught could pluck the gem out of juggernaut, a power gem wielder could do the same. We're talking about limitless cosmic-energy boosted strength here.
Spider-man with the power gem would beat classic juggernaut easily.
Spider-man with the power gem would beat one million current juggernauts without breaking a sweat.