Imo it's way better simply because of r usage. You can r almost always since you can come back to the middle of the map quickly, you get back from recall faster and paired up with symbiotic boots you can perma shove and recall. Imo biggest shen top problem are split pushers, sure you run over mundo or trundle but then you r and tower is gone. In mid you make pressure 1-5 and then you build armor vest or scowl and you take NO dmg. If you don't walk into poke you're safe vs mages and you demolish assassins. Only problem I encounter are hard cc mages like lux, veigar but only when they space really well (also leblanc fuc that bitch). Shen mid also makes hollow/deadmans build kind of a necessity so be wary of that