head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Optimization · Pure Optimization
Tower-defense loadout math wearing an Adventure Time crossover costume.

Optimization · Pure Optimization
A classic psychological adventure where an amnesiac navigates surreal delusions to recover his identity.
Bloons Adventure Time TD leans Optimization (Pure Optimization); Sanitarium leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Bloons Adventure Time TD
Tower placement and occasional ability taps
Sanitarium
Point-and-click navigation requires no dexterity
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Bloons Adventure Time TD
Bloon rushes follow fixed wave scripts
Sanitarium
No opponents; the delusions follow a fixed narrative
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Bloons Adventure Time TD
Character trinket drops add light collection RNG
Sanitarium
Surreal puzzle logic is unknown until reasoned out
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Bloons Adventure Time TD
Hero, allies and trinket loadout math drives every map
Sanitarium
Every chapter is a deterministic puzzle to solve
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.