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
Beloved fantasy turn-based strategy of heroes, castles, and stacked creature armies racing for map control.

Optimization · Pure Optimization
Engineer a pandemic; evolution order is the puzzle.
Heroes of Might and Magic II leans Optimization (Pure Optimization); Plague Inc: Evolved leans Optimization (Pure Optimization).
Plague Inc: Evolved leans a little harder on execution, though the gap is small.
Heroes of Might and Magic II
Turn-based clicking only
Plague Inc: Evolved
no reflex
Heroes of Might and Magic II leans a little harder on reads, though the gap is small.
Heroes of Might and Magic II
Hotseat duels reward mind games; AI is mappable
Plague Inc: Evolved
world response scripted
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Heroes of Might and Magic II
Map exploration, morale, luck, and combat rolls
Plague Inc: Evolved
country event timing
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Heroes of Might and Magic II
Build orders, hero chaining, and creature math are deeply solvable
Plague Inc: Evolved
evolution order heavily solved
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.