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
Shot timing and play-calling against opponents who scheme around your habits.

Execution · Competitive PvP
Timing-based basketball execution layered over playbook knowledge and opponent prediction.
NBA 2K16 leans Execution (Competitive PvP); NBA 2K9 leans Execution (Competitive PvP).
NBA 2K9 leans a little harder on execution, though the gap is small.
NBA 2K16
Shot-stick timing and dribble moves gate every possession
NBA 2K9
Shot timing and stick handles set the ceiling
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K16
Online opponents adjust defensive schemes against your tendencies
NBA 2K9
Online defenders bait passes and adapt to your sets
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K16
Shot RNG and card packs add bounded randomness
NBA 2K9
Shot RNG and bounces add bounded noise
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K16
Playbooks, rotations and roster building reward deep study
NBA 2K9
Playbooks, matchups and roster management 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.