I feel like if it was hand-to-hand combat Feral might actually come out on top, especially with the amount of punishment Feral can take. I mean, Jungle could probably pummel the shit out of him, but Feral would most likely keep getting back up and would be a lot more vicious. Remember, Feral KO'd a bear, so he definitely wouldn't be easy to beat 1 on 1.
If it's a battle of strategy and hunting experience, though, I think Jungle would do him in pretty quick.