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
WWII grand strategy: templates, production, and focus paths.

Optimization · Pure Optimization
A racing management sim of car development and live pit strategy.
Hearts of Iron IV leans Optimization (Pure Optimization); Motorsport Manager Mobile 2 leans Optimization (Pure Optimization).
Hearts of Iron IV leans a little harder on execution, though the gap is small.
Hearts of Iron IV
pausable, micromanagement-heavy
Motorsport Manager Mobile 2
No driving - pure strategy, zero twitch
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Hearts of Iron IV
PvP partly, mostly scripted AI
Motorsport Manager Mobile 2
Predicting rival pit and tire strategy mid-race
Motorsport Manager Mobile 2 leans a little harder on variance, though the gap is small.
Hearts of Iron IV
focus tree branches, events
Motorsport Manager Mobile 2
Weather, reliability and incidents add randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Hearts of Iron IV
division templates and production solved
Motorsport Manager Mobile 2
Car development, pit strategy and economy 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.