Cho'gath mid is op.
I have played Cho'gath mid almost to level 5 master(I'm rank 18) and I think he is a fantastic mid laner. Against Katerina and other (cheap) champions like her, he doesn't do that great. But you don't even really need to do good in the early game, you get a lot of damage either way (loosing the lane or not). His W (scream) is not really necessary, it really is just for a bit of damage and Q does alot more damage and throws them in the air for a stun. ( look at the picture of item set) I was going to make zhonya's next for the next item because I didn't know what to make next, but my team ended the game shortly after. The pic was just one pic out of many, i picked that one because it had the most complete build, most of my mid Cho'gath games are like that anyways.
: meh. It's not that bad actually, but I prefer other items on Cho as you don't really need it. Getting a more AP-oriented item would allow you to be even more dangerous burst-wise. Also, you're not really the greatest melee fighter of the game. You'd be better off positioning a bit more retreated from the fight. That's of course if you haven't already snowballed ridiculously in your games, which you did. So you probably didn't feel any danger in coming to melee [because you were overfed]
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