I gota majorly disagree on the quality of the deck thing. Flame imp shining out as the one bit of trash, but everything else I've pulled from rag is pretty much pure gold, and all basically exactly what he needs to fight Nef. Not that it's probably enough with a 4 mana lead, but it's certainly geared to help. Nefs deck feels a lot more random and weak overall.
Nef certainly does have some instant win hands though.
Nah, Rag's deck is pretty much shit. I played 13 times as Rag vs a friend Nef (dunno why I was getting only Rag), and I just won 2 times. These 2 times are when he doesn't get Vael turn 2 or 3.
Seriously, Rag needs to survive the first 6 turns, and after that he has the upper hand. But he has shit cards to do this, because they all costs too much or are ineffective.
The only few are Living Bomb and the one that puts corruption on every minions.
Flamestrike is useless (only crea with 4hp is the one that does 3 damage with a dragon and 7 mana), thaurissan and his wife are useless, the first hero power is useless, armor + draw is useless, Baron Geddon is useless (too late and small effect). In comparison to Nef's cards, Rag's costs way too much, especially the ones that are from classes decks (I think the worse ones are the Shaman's with overload).
In a normal deck, Rag's card would be awesome, but most of Nef's minions are 6/6 or 7/7.
Coren is only useful if the Nefarian puts the Golem which reduces spells costs by 3, allowing you to play Coren + Brawl for 6.