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

Execution · Competitive PvP
A crossover anime arena fighter pitting Shonen Jump heroes against each other.

Execution · Competitive PvP
Grapple timing and reversal prediction against human opponents in the ring.
Jump Force leans Execution (Competitive PvP); WWF War Zone leans Execution (Competitive PvP).
WWF War Zone leans a little harder on execution, though the gap is small.
Jump Force
3D arena combos with generous tracking
WWF War Zone
Move inputs and reversal timing decide exchanges
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Jump Force
Human opponents force guard-break guessing
WWF War Zone
Human opponents bait grapples and reversals constantly
WWF War Zone leans a little harder on variance, though the gap is small.
Jump Force
Full information arena duels
WWF War Zone
Minor hit randomness in grapple trades
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Jump Force
Team picks and awakening meter management
WWF War Zone
Learning each wrestler's movelist and counters is the homework
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.