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 · Mind & Math
A sloppy RTS still testing build orders and economy ahead of micro.

Optimization · Pure Optimization
Managing galactic economy and fleet counters, with prediction mattering against humans.
Empire Earth III leans Optimization (Mind & Math); Star Wars: Empire at War leans Optimization (Pure Optimization).
Empire Earth III leans a little harder on execution, though the gap is small.
Empire Earth III
Macro speed matters though far less than in tighter RTS peers
Star Wars: Empire at War
Some battle micro, but APM never dominates outcomes
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Empire Earth III
Human opponents' timing attacks must be scouted and predicted
Star Wars: Empire at War
Multiplayer galactic feints and fleet composition mind-games matter
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Empire Earth III
Map starts and AI behaviour hold mild unknowns
Star Wars: Empire at War
Fog of war hides enemy fleets until scouted
Star Wars: Empire at War leans a little harder on optimization, though the gap is small.
Empire Earth III
Epoch timing and economy builds dominate outcomes
Star Wars: Empire at War
Economy, tech order and counter-unit composition decide campaigns
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.