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 · Pure Optimization
Charming diorama puzzler about routing a jumpless Toad to each star.

Optimization · Pure Optimization
A third-person tower defense about funneling orc hordes into gleefully lethal trap corridors.
Captain Toad: Treasure Tracker leans Optimization (Pure Optimization); Orcs Must Die! leans Optimization (Pure Optimization).
Orcs Must Die! leans a little harder on execution, though the gap is small.
Captain Toad: Treasure Tracker
Gentle navigation, no jumping, light timing
Orcs Must Die!
Active shooting supplements the traps
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Captain Toad: Treasure Tracker
No adaptive opposition anywhere
Orcs Must Die!
Orc waves follow fixed paths
Orcs Must Die! leans a little harder on variance, though the gap is small.
Captain Toad: Treasure Tracker
Everything is visible and fixed
Orcs Must Die!
Minor wave composition randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Captain Toad: Treasure Tracker
Rotating dioramas to solve fixed route puzzles
Orcs Must Die!
Trap placement and kill-corridor economics are the game
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.