head to head
vs
Naruto Shippuden: Ultimate Ninja Storm 2vsOne Piece: Grand Adventure
Naruto Shippuden: Ultimate Ninja Storm 2 leans Execution (Competitive PvP); One Piece: Grand Adventure leans Execution (Competitive PvP).
Naruto Shippuden: Ultimate Ninja Storm 2One Piece: Grand Adventure
Axis by axis
Execution5 vs 6
One Piece: Grand Adventure leans harder on execution: Combo strings and support timing decide exchanges
Reads4 vs 4
Even - both lean on reads about the same.
Variance1 vs 1
Even - both lean on variance about the same.
Optimization4 vs 3
Naruto Shippuden: Ultimate Ninja Storm 2 leans harder on optimization: Team composition and chakra management have solvable lines
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.