head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is optimization, and it is a single point.

Execution · Practiced Mastery
A basketball sim testing shot timing and tactical play against opponents.

Optimization · Practiced Mastery
Classic RTS that polished Warcraft's formula with naval combat, air units and beloved multiplayer.
NBA 2K3 leans Execution (Practiced Mastery); Warcraft II: Tides of Darkness leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K3
Shooting and dribble timing decide plays
Warcraft II: Tides of Darkness
Faster micro across land, sea and air units
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K3
Human opponents reward reading offense and defense
Warcraft II: Tides of Darkness
Multiplayer scouting wars and build feints
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K3
Shot success carries randomness
Warcraft II: Tides of Darkness
Fog of war conceals enemy tech and armies
Warcraft II: Tides of Darkness leans a little harder on optimization, though the gap is small.
NBA 2K3
Playcalling, rotations, and team management reward planning
Warcraft II: Tides of Darkness
Refined build orders and upgrade timings are studyable
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.