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 selection against opponents adjusting to your tendencies.

Execution · Competitive PvP
Basketball stick execution layered over reading human defensive habits online.
NBA 2K14 leans Execution (Competitive PvP); NBA Live 19 leans Execution (Competitive PvP).
NBA Live 19 leans a little harder on execution, though the gap is small.
NBA 2K14
Shot release timing and dribble chains gate scoring
NBA Live 19
Stick skills, shot timing and dribble moves decide possessions
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K14
Online opponents counter your favourite plays
NBA Live 19
Online opponents bait switches and read defensive 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
NBA Live 19
Shot RNG and physics 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 2K14
Playbook knowledge and roster management reward study
NBA Live 19
Squad building and play selection matter underneath
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.