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 shot timing layered over reading human opponents and exploiting matchup math.

Execution · Competitive PvP
Milsim 50v50 team-tactical shooter.
NBA 2K19 leans Execution (Competitive PvP); Squad leans Execution (Competitive PvP).
Squad leans a little harder on execution, though the gap is small.
NBA 2K19
Shot timing, dribble moves and defense sticks decide possessions
Squad
Bullet drop, sway, suppression test aim
Squad leans a little harder on reads, though the gap is small.
NBA 2K19
Online opponents adapt plays and baiting constantly
Squad
Squad tactics versus humans demand prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K19
Shot RNG adds noise around the timing meter
Squad
Minimal RNG, comm-driven outcomes
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K19
Playbooks, matchups and build optimisation underpin wins
Squad
Logistics, FOB placement, kit choice deep
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.