head to head
Warcraft III: Reign of Chaos asks more than Gigantic: Rampage Edition, and the gap is optimization.

Execution · Grand Arena
A team-based hero shooter testing aim, prediction of opponents, and objective coordination.

Optimization · Grand Arena
Blizzard's hero-centric RTS where build-order theory meets surgical unit micro against humans.
Gigantic: Rampage Edition leans Execution (Grand Arena); Warcraft III: Reign of Chaos leans Optimization (Grand Arena).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Gigantic: Rampage Edition
Aiming abilities and dodging in real-time hero combat matters
Warcraft III: Reign of Chaos
Micro of heroes and units decides fights
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Gigantic: Rampage Edition
Predicting human teammates and enemies drives 5v5 outplays
Warcraft III: Reign of Chaos
Scouting and out-guessing a human opponent's tech
Warcraft III: Reign of Chaos leans a little harder on variance, though the gap is small.
Gigantic: Rampage Edition
Little randomness; outcomes hinge on team play
Warcraft III: Reign of Chaos
Creep routes and item drops add randomness
Warcraft III: Reign of Chaos leans clearly harder on optimization.
Gigantic: Rampage Edition
Ability upgrades, objective control and team comp planning
Warcraft III: Reign of Chaos
Build orders, creeping routes, and matchup theory run deep
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.