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 · Pure Optimization
Classic RTS economy optimisation with modest micro demands.

Optimization · Practiced Mastery
The original 1994 RTS pitting orc and human bases against each other in Azeroth.
Tzar: The Burden of the Crown leans Optimization (Pure Optimization); Warcraft: Orcs & Humans leans Optimization (Practiced Mastery).
Warcraft: Orcs & Humans leans a little harder on execution, though the gap is small.
Tzar: The Burden of the Crown
RTS macro speed matters, far below esport ceilings
Warcraft: Orcs & Humans
Clunky unit micro and click speed still matter
Warcraft: Orcs & Humans leans a little harder on reads, though the gap is small.
Tzar: The Burden of the Crown
Human skirmishes reward scouting opponents' intentions
Warcraft: Orcs & Humans
Human multiplayer adds genuine build mind games
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Tzar: The Burden of the Crown
Map fog hides enemy development until scouted
Warcraft: Orcs & Humans
Fog of war hides enemy composition
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Tzar: The Burden of the Crown
Economy build orders and race tech choices decide games
Warcraft: Orcs & Humans
Build orders and economy timing dominate
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.