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 · Practiced Mastery
Stick-skill execution and opponent habit-reading over a solvable hockey meta.

Execution · Competitive PvP
Reversal timing and pacing against an opponent baiting your counters.
NHL 23 leans Execution (Practiced Mastery); WWE 2K15 leans Execution (Competitive PvP).
NHL 23 leans a little harder on execution, though the gap is small.
NHL 23
Skill-stick dekes and shot timing carry possession play
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.
NHL 23
Online opponents reward reading defensive structure habits
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.
NHL 23
Bounces, deflections and goalie AI add noise
WWE 2K15
Chain-wrestling rock-paper-scissors minigames add randomness
NHL 23 leans a little harder on optimization, though the gap is small.
NHL 23
Meta builds, line chemistry and set plays are studyable
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.