The deck has quite a few things going for it. It ran two of the strongest late turn ninjas in the game currently, it ran the best mission and best jutsu in the block period, it countered the meta, and it had surprise factor.
Deva Path does some amazing things to the game. It gets rid of any answers the opponent has. And even if they Sabiru him, it got rid of an answer didn't it? The Third has thread upon thread with people arguing how good he is so I won't go into it.
Warhawk and Dragon Flame do so much. They have ensured Fire being a force to be reckoned with. They are THE reason Fire will remain being such a strong force in this game.
This format has been about three things. Big hands, Odd numbered Missions, and powerful early game jutsus. Naraka Path and Kiba being stuck with eachother countered all of this. The big hands came from the Odd numbered missions and Naraka Path wrecked this. Kiba just stops jutsu in its tracks. Clash and Deva PAth are icing on the cake.
Surprise factor will always win games. When you look at peoples sides, what did they prepare for? I can guarantee it wasn't this deck. So when your side means nothing anymore, you lose a very integral part of the game. Then there's the fact no one knew what he was going for. They saw Kiba and probably were expecting a mill deck or something. Then Naraka path got dropped. Then Clash? The deck would seem a hodge podge in game 1. No one is seeing what the goal is until Turn 3 and by then it's too late. Surpises. Win. Games.
The deck has a very good spine. Incredibly strong early game, standard mid game, and then the cute little tech choices give it a very good spine. However, this is not the type of deck that will be able to sustain. Even if rotation wasn't conking out the important parts, the deck would roll over and die eventually. When someone figures out the comboes that make the deck run and take it apart form the inside out the deck would become unplayable. It's fifteen are almost up, enjoy while it lasts.