That depends on if its a Smash Jug or Immortal Jug.
An Immortal Jug/Defense Guardian will give you hell in 1v1, Trust me.
the tanking spec... give you hell... 1vs1?!
Are you some shadow spec or a combat sent (the worse spec of sent)?! Because the soo mighty defense of a tank is ignore by most attacks except weapon based attacks which harm mostly the 2 spec above.
Them chaining cds every 3min to last longer doesn't make more of a threat... Just an annoyance that you keep on the side.