No it is absolutly not the same. I think you just missed one of the biggest points in One Piece.
NAKAMA
Luffy couldn't win the war, Luffy couldn't beat Odz, Luffy couldn't win from a single Pacifista. He needed his friends to make it through all these things just barely. And even then are there are lot more stronger pirate crews and enemies around. Luffy and Co are not even close to Yonkou level. The strawhats work for their upgrades and new techniques. Natsu just stands up and walks to the next guy. Even in this arc he fought with 3 different guys of the 7 kin and he won all the fights. Now he is up against Hades too. It's just boring and old. He makes the rest of his friends look useless since the Galuna arc. Sure Gray, Erza and Lucy always get an enemy to play with but in the end it is always the same.
I don't even know why i'm even discussing this, all the Strawhats just spent 2 years non stop training. Natsu hasn't even trained once in the entire run of the manga. All he does is lucky power ups. Eat lacirama, recieve golden flame from Jellal, get lightning from Laxus. He is the same Natsu that beat that Kage guy in the first chapters just barely and now he is up versus one of the strongest wizards that ever lived.
Even Naruto, Sasuke and Ichigo train for their skills and even for those guys a powerup feels like a gift from the author. After this chapter i'm done with Fairy Tail. Write this down: Natsu will exchange a couple of blows with Hades, He will get in trouble, <insert cliche friends speach>, Cana will appear, Cana and Natsu beat Hades, Gildartz will tell how proud he is of his daughter and lets her know he always known she was his daughter, Party in the guild, next arc.