The fighting in part 2 is bigger and more Epic...But in part one it was a bit more Ninja like if you know what I mean.
Remember the fights with Zabuza? now its just a big Pacific Rim job...Big monsters fighting on another, witch is cool but not as interesting. For me its kinda a tie I like them both.
I hope after the war we get another Time Skip..it gets a little weird if the 2 most powerful Shinobi(when madara is dead) are both about 17 years =D you can check my link in my sig for how that's going to happen. =)