head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Execution · Competitive PvP
Simple-input arena fighting decided by baiting human defensive resources.

Execution · Competitive PvP
Arcade wrestling that tests reversal timing and little else by design.
Naruto Shippuden: Ultimate Ninja Storm Revolution leans Execution (Competitive PvP); WWE 2K Battlegrounds leans Execution (Competitive PvP).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Naruto Shippuden: Ultimate Ninja Storm Revolution
Combo and counter timing on intentionally simple inputs
WWE 2K Battlegrounds
Button-mash combos and reversal timing set the pace
Naruto Shippuden: Ultimate Ninja Storm Revolution leans a little harder on reads, though the gap is small.
Naruto Shippuden: Ultimate Ninja Storm Revolution
Baiting a human's substitutions and guard breaks matters
WWE 2K Battlegrounds
Human opponents add light reversal mind games
WWE 2K Battlegrounds leans a little harder on variance, though the gap is small.
Naruto Shippuden: Ultimate Ninja Storm Revolution
Fully visible fights with nothing hidden
WWE 2K Battlegrounds
Power-ups and interactive arenas inject party chaos
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Naruto Shippuden: Ultimate Ninja Storm Revolution
Team and awakening type picks are a shallow solvable layer
WWE 2K Battlegrounds
Shallow systems - move knowledge helps a little
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.
full breakdown
Naruto Shippuden: Ultimate Ninja Storm Revolution →
full breakdown
WWE 2K Battlegrounds →