OP is better in all aspects. (Unless I'm forgetting some)
The issue with OP fights is that Oda switches too much or just pointless talking. Other than that, they're still better than Naruto. My problem with OP ATM is the time skip...SH's feel bland with little development. Also arcs feel a bit lazy when Oda uses a similar structure from the pre-TS arcs. They're still good but I'd like something entirely fresh.
Yeah, Oda uses a slow pace for his story. Hell, the Dressrosa arc lasted for a year or so, didn't it? And yeah, he does recycle some of the arcs, which has a strict formula.
I hated the Thriller Bark arc. Worst arc in OP ever!