And if that doesn't work then what? Thor is a warrior through and through, he takes on any opponent regardless if the odds seem impossible.
True but then there is nothing they could do either except take the said person head on. Just to be clear Thor using ranged attacks isn't the issue, just the notion that in a VERSUS forum, said character(s) aren't going to engage because it could result in them losing when they have no other options is quite silly imo.
If Thor does try to stay in the air and hit him with ineffective air attacks it won't be a stalemate. Juggernaut will just make him come down by attacking civillians or walking through buildings.
Eventually, Thor would possibly just say "screw it" and attack him head on.
Depends on the character being debated, imo. Personally, I think Thor would eventually just attack Juggernaut, but others wouldn't be above just going for an indefinite stalemate.
This mostly depends on how you feel about if Thor only cancelled Cain's FF with his hammer. Personally I believe it did more than that and weakened him overall which I think would still be viable here.
In that issue, the writer was pretty convinced that most of Cain's durability came from his force field and he wasn't as formidable without it. Even though back then the force field was mainly for getting things off of him and his durability was top tier. So when he dropped the force field, Cain had to rely on his strength which was still enough to hurt Thor, and his durability which wasn't all that great in that issue.