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
Stick-skill basketball execution layered with predicting a human opponent's play-calling.

Execution · Competitive PvP
Shot timing and play selection against opponents adjusting to your tendencies.
NBA 2K10 leans Execution (Competitive PvP); NBA 2K14 leans Execution (Competitive PvP).
NBA 2K10 leans a little harder on execution, though the gap is small.
NBA 2K10
Shot timing, dribble moves and defense need real stick skill
NBA 2K14
Shot release timing and dribble chains gate scoring
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K10
Human opponents' play-calling and tendencies must be predicted
NBA 2K14
Online opponents counter your favourite plays
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K10
Shot RNG and bounces add modest game-to-game noise
NBA 2K14
Shot RNG sways close possessions
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K10
Roster knowledge, play-calling and matchup exploitation reward study
NBA 2K14
Playbook knowledge and roster management reward study
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.