head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Competitive PvP
Arcade wrestling testing reversal timing and light opponent prediction.

Execution · Competitive PvP
Reversal timing and pacing against an opponent baiting your counters.
All Elite Wrestling: Fight Forever leans Execution (Competitive PvP); WWE 2K15 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.
All Elite Wrestling: Fight Forever
Combo timing and reversal windows ask for decent hands
WWE 2K15
Reversal timing windows decide most exchanges
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
All Elite Wrestling: Fight Forever
Human opponents bait reversals and vary attack rhythm
WWE 2K15
Human opponents bait reversals and vary move timing
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
All Elite Wrestling: Fight Forever
Weapon spawns and momentum swings add light chaos
WWE 2K15
Chain-wrestling rock-paper-scissors minigames add randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
All Elite Wrestling: Fight Forever
Move-set knowledge and meter management are learnable
WWE 2K15
Move sets, stamina and match pacing are learnable systems
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.