Yorick is like an auto win because of his split push potential

He's good. I like him.

Hardly an auto-win, though. Not even the best at what he does best.

He is subject to many of the Juggernaut weaknesses though, since he is one. I should know (L7 player) that for certain.

He's susceptible to kiting, lacks any real escapes aside from hoping and praying you catch your pursuer with his W wall as you run, and Flash. Kill his ghouls and he lacks a lot of his damage. Force him to use his Ult defensively and you take away even MORE of his combat-power.

Really, if you know how to stop him, just like any Juggernaut, he can be easily shut down.

I like how you say he has pets but both of his pets are special cased to be treated as ambient damage rather than pet damage.