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.

Optimization · Practiced Mastery
Spice economy management and build-order knowledge with modest micro demands.

Optimization · Practiced Mastery
Boulder-steering races layered over light tower-defense placement decisions.
Dune 2000 leans Optimization (Practiced Mastery); Rock of Ages 3: Make & Break 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.
Dune 2000
Unit micro and build speed matter at competitive pace
Rock of Ages 3: Make & Break
Steering the boulder through obstacles takes moderate motor control
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Dune 2000
Human skirmishes add some build-order mind games
Rock of Ages 3: Make & Break
Human opponents vary defenses but options are shallow
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Dune 2000
Fog of war hides enemy composition until scouted
Rock of Ages 3: Make & Break
Unit unlocks and physics add light chaos
Dune 2000 leans a little harder on optimization, though the gap is small.
Dune 2000
Spice economy and build orders decide most games
Rock of Ages 3: Make & Break
Defense placement and boulder routing reward planning
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.