Hearthpwn

This deck is a variation on a deck that hit top 5 legend http://www.hearthpwn.com/decks/376635-top-5-legend-raptor-rogue . It just runs pit snake over leper.

There's 3 version of raptor rogue currently: aggro, tempo and higher curve. I chose tempo because I believe it is the most optimal version of the deck while having the option to go aggro. I don't believe raptor rogue fits in the aggro category as well as tempo because the raptor combo is kind of slow and it runs a high curve with lots of 5+ minions. The higher curve version isn't as good because it doesn't utilise rogue's best trait (tempo). This is pretty much the tempo version with snake over leper because it's a better tempo card.

Raptor rogue is just a better zoo. The things you can do with raptor is disgusting.

Cold blood is pretty much Power Over except it lasts.

You loss Flame imp and void walker but Flame imp isn't good in this meta, so the only valuable lose is voidwalker. Voidwalker is better against aggro while pitsnake is better against control.

Pitsnake is good because it's a massive tempo card. Imagine you are facing a druid and it's turn 5. He can't play his druid of the claw because of pit snake and he has 2 use 2 mana to clear your snake but he has to have a shade follow-up to use all his mana. However, this is generally not the case so he has to waste his entire turn, which is pretty much auto-win. Pit snake is a massive tempo card and is better than leper gnome. You only run aggro to beat control, but out tempoing control is a much better option. You do not have to get pit snake to kill something. The tempo from the card is what makes it good.

You lose imp gang boss but you get raptor which is more op.

You lose Doomguard but DG is mediocre in this meta where you can't flood your board.

You lose life tap but I find this deck does not run out of cards because of it's high value minions and card draw (fan and loot+raptor).

The next valuable loss is dark peddler but rogue is still better.

Overall, the only real loss are life tap and dark peddler but rogue still outperforms.

I've come to the conclusion Rogue is a better zoo. It also has removal and aoe. Basically, it does a better job at beating control matchups and true aggro matchups like face hunter. Zoo only does better against psuedo aggro decks (decks that don't rush face 90% of the time) or midrange like secret paladin, tempo mage and aggro druid.