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
A base-layout and attack-planning puzzle against static player defenses.

Optimization · Pure Optimization
An oriental-fantasy grind MMORPG where upgrade luck and farming efficiency define progress.
Boom Beach leans Optimization (Pure Optimization); Metin2 leans Optimization (Pure Optimization).
Metin2 leans a little harder on execution, though the gap is small.
Boom Beach
Tapping troop deployments takes no dexterity
Metin2
Hack-and-slash grinding with simple inputs.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Boom Beach
Attacks hit static bases - defenders aren't present to adapt
Metin2
Kingdom wars add light player-versus-player conflict.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Boom Beach
Scouting reveals most info; matchmaking adds some spread
Metin2
Upgrade chance rolls dominate gear progression.
Metin2 leans a little harder on optimization, though the gap is small.
Boom Beach
Base layouts, troop compositions and timing are the solvable core
Metin2
Farming spots, alchemy, and stat builds are solvable grind.
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.