Although Sas possesses close to 100x the strength of man-thing, he ain't gonna do much damage to a big pile of mud no matter how hard he hits it.
Apparently Man-thing weakens and eventually lapses into dormancy if removed from his swamp for an extended period of time.
Since Sasquatch is actually a Walter Langkowski (who is some sort of genius scientist) I'm sure he'd figure this one out eventually and somehow defeat Manthing that way.
But back to the topic at hand, although I think juggy would defeat Sasquatch I don't think it would be as easy as people keep thinking, and I'm thinking that nobody really knows, respects or cares what Sasquatch is capable of.