Really? Not similar at all. Zorko plays with Rockliff and could easily play alongside Mitchell.
Zorko 225 kicks, 103 handballs, 18 goals, 74 clearances, 96 tackles, 67 I50s, 139/185 contested/uncontested possies
Mitchell 180 kicks, 281 handballs, 4 goals, 74 clearances, 91 tackles, 51 I50s, 191/279 contested/uncontested possies
Mitchell is 130 ahead on disposals for the year but he doesn't do anything with it. He does his role well, but 35 vs 25 touches a game definitely overstates his impact. He gets a more uncontested ball and a lot more handballs, which is not really what you want. They are even for clearances and tackles and Mitchell is 4 ahead per game on contested possies, but Zorko is far more damaging. He kicks the ball more, kicks the ball long and kicks goals.
For someone with Mitchell's attributes I'd want to see him in the top couple for clearances in the comp to be in the AA frame. He's currently 15th, and his contested:uncontested ratio is 1:1.5. Patrick Cripps is 1.15:1, Cunnington 1.35:1, 1.1:1. This is where Mitchell should be. Similar to Matt Priddis, if he gets 20+ uncontested possessions then big whoop - he's not a damaging outside player. If he's getting his hands to it at the bottom of every pack and farming it out then he's damaging in his own way.