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 math wrapped in a city-building economy to optimise.

Optimization · Pure Optimization
Handheld tactics RPG adding a shifting law system to grid battles.
Bloons Monkey City leans Optimization (Pure Optimization); Final Fantasy Tactics Advance 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 Monkey City
Tower placement is unhurried clicking
Final Fantasy Tactics Advance
Turn-based grid commands only
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Bloons Monkey City
Bloon waves never adapt to your defenses
Final Fantasy Tactics Advance
Scripted opponents, judge rules are fixed
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Bloons Monkey City
Captured tile layouts and special events vary mildly
Final Fantasy Tactics Advance
Random laws and hit rolls
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Bloons Monkey City
Tower math, city economy and unlock routing are the whole game
Final Fantasy Tactics Advance
Race-job ability combos reward deep planning
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.