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
Planning a raid in advance, then executing it where one mistake kills.

Optimization · Practiced Mastery
The original 1994 RTS pitting orc and human bases against each other in Azeroth.
Tom Clancy's Rainbow Six leans Optimization (Practiced Mastery); Warcraft: Orcs & Humans leans Optimization (Practiced Mastery).
Tom Clancy's Rainbow Six leans a little harder on execution, though the gap is small.
Tom Clancy's Rainbow Six
One bullet kills, so entries demand clean aim
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.
Tom Clancy's Rainbow Six
Multiplayer raids add human counterplay
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.
Tom Clancy's Rainbow Six
Terrorist placements are unknown until doors open
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.
Tom Clancy's Rainbow Six
The pre-mission planning phase is the real game
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.