Zuna at jungle does make some sense if you need to have him on the team, may as well put him in a role where poor last hitting mechanics won't routinely get him behind in lane, and his penchant for jumping into the other team 1v5 will at least make more sense on champs like Olaf or Shyv.
That said, lol topwick in competitive unless u are playing a comp where he fits in perfectly. Need to have like ori mid and put ball on him, or vi jungle + zed mid and you can instaburst 1-2 targets. With lb it seems pretty awful.