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.

Optimization · Practiced Mastery
A cult RTS where peasants transform into warriors and micro decides skirmishes.

Optimization · Practiced Mastery
Classic RTS that polished Warcraft's formula with naval combat, air units and beloved multiplayer.
Battle Realms leans Optimization (Practiced Mastery); Warcraft II: Tides of Darkness leans Optimization (Practiced Mastery).
Warcraft II: Tides of Darkness leans a little harder on execution, though the gap is small.
Battle Realms
Real-time micro of small squads matters.
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.
Battle Realms
Human opponents adapt builds and harassment.
Warcraft II: Tides of Darkness
Multiplayer scouting wars and build feints
Warcraft II: Tides of Darkness leans a little harder on variance, though the gap is small.
Battle Realms
Minor map randomness.
Warcraft II: Tides of Darkness
Fog of war conceals enemy tech and armies
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Battle Realms
Peasant economy and unit upgrades solvable.
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.