head to head
Kerbal Space Program asks more than World of Goo, and the gap is execution.

Optimization · Pure Optimization
Rocket engineering sandbox about orbital mechanics.

Optimization · Pure Optimization
A physics puzzle game about building wobbly towers and bridges from living goo balls.
Kerbal Space Program leans Optimization (Pure Optimization); World of Goo leans Optimization (Pure Optimization).
Kerbal Space Program leans clearly harder on execution.
Kerbal Space Program
Manual piloting, docking precision
World of Goo
Placing goo balls needs only mild precision
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Kerbal Space Program
No adaptive opponents
World of Goo
No opponent exists
Kerbal Space Program leans a little harder on variance, though the gap is small.
Kerbal Space Program
Light reentry and physics variance
World of Goo
Physics are visible and deterministic
Kerbal Space Program leans clearly harder on optimization.
Kerbal Space Program
Rocket design, delta-v budget, mission planning
World of Goo
Tower structure and goo economy are solvable per level
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.