Originally posted by Tattoos N Scars
That's hard to say. It's like comparing Superman and Doomsday. Superman, like Thor, has the better lifting feats. Doomsday and Juggs...with not so many lifting feats are still considered their peers.
When Juggernaut tried to lift Mjolnir and couldn't, Juggernaut said something like "Why isn't this working? I'm easily as strong as Thor" and Thor didn't disagree saying something about it not being about physical strength.
Also, in the Avengers/Ultraforce crossover, Prime matched Thor in strength. When Juggernaut was with the Exiles he was able to overpower Prime, and he was at 50% strength at the time. I'd say at the very least they're peer's in strength, but there's precedant for saying Juggernaut might be stronger.