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
Shot timing and play selection against opponents adjusting to your tendencies.

Execution · Practiced Mastery
Stick-skill execution and opponent habit-reading over a solvable hockey meta.
NBA 2K14 leans Execution (Competitive PvP); NHL 23 leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K14
Shot release timing and dribble chains gate scoring
NHL 23
Skill-stick dekes and shot timing carry possession play
NBA 2K14 leans a little harder on reads, though the gap is small.
NBA 2K14
Online opponents counter your favourite plays
NHL 23
Online opponents reward reading defensive structure habits
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K14
Shot RNG sways close possessions
NHL 23
Bounces, deflections and goalie AI add noise
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K14
Playbook knowledge and roster management reward study
NHL 23
Meta builds, line chemistry and set plays are studyable
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.