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 · Grand Arena
The genre-defining historical RTS, still alive on the ladder.

Reads · Grand Arena
Three-faction sci-fi RTS where asymmetric Goo mechanics and unit counter-selection drive competitive outcomes.
Age of Empires II: Definitive Edition leans Optimization (Grand Arena); Grey Goo leans Reads (Grand Arena).
Age of Empires II: Definitive Edition leans a little harder on execution, though the gap is small.
Age of Empires II: Definitive Edition
micro and macro APM at high ladder
Grey Goo
Goo expansion rate timing and unit special abilities need precise control
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Age of Empires II: Definitive Edition
PvP ladder rewards adaptation
Grey Goo
Three-faction asymmetry makes opponent tech choices hard to predict
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Age of Empires II: Definitive Edition
random map spawns minor
Grey Goo
Map resource spread is fixed; minimal in-game RNG
Age of Empires II: Definitive Edition leans a little harder on optimization, though the gap is small.
Age of Empires II: Definitive Edition
civ build orders deeply mapped
Grey Goo
Goo creep routing and tech order are well-defined optimization problems
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.