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
Reversal timing and pacing against an opponent baiting your counters.

Execution · Competitive PvP
A wrestling game about grapple timing and reversal reads against opponents.
WWE 2K15 leans Execution (Competitive PvP); WWE Raw 2 leans Execution (Competitive PvP).
WWE Raw 2 leans a little harder on execution, though the gap is small.
WWE 2K15
Reversal timing windows decide most exchanges
WWE Raw 2
Grapple and reversal timing drive matches
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
WWE 2K15
Human opponents bait reversals and vary move timing
WWE Raw 2
Reading human opponents' moves matters in versus
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
WWE 2K15
Chain-wrestling rock-paper-scissors minigames add randomness
WWE Raw 2
Some reversal-window randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
WWE 2K15
Move sets, stamina and match pacing are learnable systems
WWE Raw 2
Move sets and momentum management add depth
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.