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
A basketball sim testing stick execution and reading opponents on court.

Execution · Pure Mechanics
Tactical SWAT shooter with lethal TTK.
NBA 2K6 leans Execution (Competitive PvP); Ready or Not leans Execution (Pure Mechanics).
Ready or Not leans a little harder on execution, though the gap is small.
NBA 2K6
Stick skills, timing shots and dribbling carry play
Ready or Not
Lethal TTK and recoil punish slop
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K6
Human opponents online require reading and faking
Ready or Not
Mostly scripted suspects, limited reads
Ready or Not leans a little harder on variance, though the gap is small.
NBA 2K6
Shot success and AI have some randomness
Ready or Not
Suspect placement and AI behavior varies
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K6
Play calling, roster and matchup management matter
Ready or Not
Loadouts, breaching tools, team plans
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.